Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Summary of Option activity under the Stock Option Plan) (Details)

v3.3.1.900
Stockholders' Equity (Summary of Option activity under the Stock Option Plan) (Details) - Stock Option Plan [Member] - Stock Options
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
shares
Shares:  
Outstanding, beginning | shares 308
Exercised | shares (286)
Expired | shares (3)
Outstanding, ending | shares 19
Exercisable | shares 19
Weighted Average Exercise Price  
Oustanding, beginning (USD per share) | $ / shares $ 6.86
Exercised (USD per share) | $ / shares 6.56
Expired (USD per share) | $ / shares 7.51
Oustanding, ending (USD per share) | $ / shares 11.35
Exercisable (USD per share) | $ / shares $ 11.35
Outstanding, Weighted Average Contractual Term 1 year
Exercisable, Weighted Average Contractual Term 1 year
Outstanding, Aggregate Intrinsic Value | $ $ 160
Exercisable, Aggregate Intrinsic Value | $ $ 160