Annual report pursuant to Section 13 and 15(d)

Industry Segments Data (Reportable segment revenues) (Details)

v2.4.0.6
Industry Segments Data (Reportable segment revenues) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]                      
Intersegment revenues                 $ 6,265 $ 6,317 $ 5,618
External revenues 183,676 178,494 176,104 171,907 168,812 177,703 168,089 164,777 710,181 679,381 651,250
Total Revenues                 716,446 685,698 656,868
Cost Of Goods Sold Intersegment                 2,778 3,444 3,291
Cost Of Goods Sold External                 247,501 227,399 207,817
Total cost of Goods Sold                 250,279 230,843 211,108
Contribution Intersegment                 3,487 2,873 2,327
Contribution External                 462,680 451,982 443,433
Total contribution                 466,167 454,855 445,760
Selling, general and administrative expenses                 243,248 235,521 228,808
Share-based compensation expense                 5,040 6,620 6,733
Plus loss attributable to non-controlling interest                 867 238 0
Plus net loss (income) attributable to equity investment                 (2) 297 0
Noncash Contribution Expense                 960   (160)
Asset Retirement Obligation, Accretion Expense                 (508) (619) (289)
Adjusted EBITDA                 226,809 223,641 221,487
Consumer [Member]
                      
Segment Reporting Information [Line Items]                      
Intersegment revenues                 0 0 0
External revenues                 352,972 352,574 342,898
Total Revenues                 352,972 352,574 342,898
Cost Of Goods Sold Intersegment                 146 0 0
Cost Of Goods Sold External                 128,324 110,693 104,481
Total cost of Goods Sold                 128,470 110,693 104,481
Contribution Intersegment                 (146) 0 0
Contribution External                 224,648 241,881 238,417
Total contribution                 224,502 241,881 238,417
Selling, general and administrative expenses                 139,191 134,951 127,130
Share-based compensation expense                 2,586 3,457 3,361
Plus loss attributable to non-controlling interest                 0 0  
Plus net loss (income) attributable to equity investment                 0 0  
Noncash Contribution Expense                 533   (81)
Asset Retirement Obligation, Accretion Expense                 282 347 149
Adjusted EBITDA                 88,858 110,734 114,716
Network Access [Member]
                      
Segment Reporting Information [Line Items]                      
Intersegment revenues                 259 0 0
External revenues                 105,447 105,456 107,227
Total Revenues                 105,706 105,456 107,227
Cost Of Goods Sold Intersegment                 114 600 600
Cost Of Goods Sold External                 24,356 28,744 25,030
Total cost of Goods Sold                 24,470 29,344 25,630
Contribution Intersegment                 145 (600) (600)
Contribution External                 81,091 76,712 82,197
Total contribution                 81,236 76,112 81,597
Selling, general and administrative expenses                 26,841 27,837 33,566
Share-based compensation expense                 790 1,214 1,598
Plus loss attributable to non-controlling interest                 0 0  
Plus net loss (income) attributable to equity investment                 0 0  
Noncash Contribution Expense                 169   (41)
Asset Retirement Obligation, Accretion Expense                 89 120 71
Adjusted EBITDA                 55,298 50,209 50,259
Commercial [Member]
                      
Segment Reporting Information [Line Items]                      
Intersegment revenues                 5,760 5,710 5,442
External revenues                 143,575 136,101 128,458
Total Revenues                 149,335 141,811 133,900
Cost Of Goods Sold Intersegment                 2,253 2,283 2,515
Cost Of Goods Sold External                 66,895 65,170 59,885
Total cost of Goods Sold                 69,148 67,453 62,400
Contribution Intersegment                 3,507 3,427 2,927
Contribution External                 76,680 70,931 68,573
Total contribution                 80,187 74,358 71,500
Selling, general and administrative expenses                 42,014 41,085 38,838
Share-based compensation expense                 1,041 1,276 1,117
Plus loss attributable to non-controlling interest                 0 0  
Plus net loss (income) attributable to equity investment                 0 0  
Noncash Contribution Expense                 156   (24)
Asset Retirement Obligation, Accretion Expense                 83 100 43
Adjusted EBITDA                 35,946 31,222 30,871
Managed Broadband [Member]
                      
Segment Reporting Information [Line Items]                      
Intersegment revenues                 0 0 0
External revenues                 86,562 63,248 49,962
Total Revenues                 86,562 63,248 49,962
Cost Of Goods Sold Intersegment                 0 0 0
Cost Of Goods Sold External                 21,298 17,021 14,012
Total cost of Goods Sold                 21,298 17,021 14,012
Contribution Intersegment                 0 0 0
Contribution External                 65,264 46,227 35,950
Total contribution                 65,264 46,227 35,950
Selling, general and administrative expenses                 24,087 18,246 17,338
Share-based compensation expense                 595 657 651
Plus loss attributable to non-controlling interest                 867 238  
Plus net loss (income) attributable to equity investment                 2 (297)  
Noncash Contribution Expense                 102   (14)
Asset Retirement Obligation, Accretion Expense                 54 52 26
Adjusted EBITDA                 42,797 28,631 19,275
Regulated Operations [Member]
                      
Segment Reporting Information [Line Items]                      
Intersegment revenues                 246 607 176
External revenues                 21,625 22,002 22,705
Total Revenues                 21,871 22,609 22,881
Cost Of Goods Sold Intersegment                 265 561 176
Cost Of Goods Sold External                 6,628 5,771 4,409
Total cost of Goods Sold                 6,893 6,332 4,585
Contribution Intersegment                 (19) 46 0
Contribution External                 14,997 16,231 18,296
Total contribution                 14,978 16,277 18,296
Selling, general and administrative expenses                 11,115 13,402 11,936
Share-based compensation expense                 28 16 6
Plus loss attributable to non-controlling interest                 0 0  
Plus net loss (income) attributable to equity investment                 0 0  
Noncash Contribution Expense                 0   0
Asset Retirement Obligation, Accretion Expense                 0 0 0
Adjusted EBITDA                 $ 3,910 $ 2,845 $ 6,366