XML 49 R65.htm IDEA: XBRL DOCUMENT v3.3.0.814
Stock-Based Compensation - Information about Options Exercised (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2014
Sep. 30, 2015
Sep. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award Options Activity [Abstract]          
Options exercised 10,000 80,000 50,000 90,000 50,000
Total intrinsic value of exercised options $ 320     $ 3,508 $ 1,970
Fair value of vested stock options         17
Tax benefits realized $ 117     $ 1,309 $ 603