Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Nonvested Restricted Stocks (Details)

v3.7.0.1
Stock-Based Compensation Nonvested Restricted Stocks (Details) - Restricted stock and restricted stock units - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Nonvested restricted stock shares, beginning of year 175 214 118
Nonvested restricted stock shares granted 120 129 184
Nonvested restricted stock shares vested (76) (92) (76)
Nonvested restricted stock shares canceled (29) (76) (12)
Nonvested restricted stock shares, end of year 190 175 214
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]      
Nonvested restricted stock weighted average grant date fair value, beginning of year $ 12.05 $ 14.59 $ 10.94
Nonvested restricted stock weighted average grant date fair value, granted (usd per share) 4.00 9.96 14.92
Nonvested restricted stock weighted average grant date fair value, vested 11.27 14.52 10.35
Nonvested restricted stock weighted average grant date fair value, canceled 13.03 12.64 10.63
Nonvested restricted stock weighted average grant date fair value, end of year $ 7.13 $ 12.05 $ 14.59