Quarterly report pursuant to Section 13 or 15(d)

Compensation (Narrative) (Detail)

v3.5.0.2
Compensation (Narrative) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Mar. 31, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Stock-based compensation $ (500)   $ 700 $ 1,107 $ 3,024
Stock options granted, exercisable life       5 years  
Stock, vesting period       3 years  
Stock options remainder vesting period       2 years  
Shares repurchased   31,808      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       357,145  
Stock Appreciation Rights (SARs) [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-Based Compensation Arrangement By Share-Based Payment Award Life       5 years  
Share-Based Compensation Arrangemet By Share-Based Payment Award Spread 300.00%     300.00%  
Share-Based Compensation Arrangement By Share-Based Payment Award Grant Date Share Price       $ 1.04  
Stock, vesting period       3 years  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       815,355  
Maximum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Stock, vesting period       5 years