XML 48 R44.htm IDEA: XBRL DOCUMENT v2.4.0.8
Weighted Average Exercise Prices for Options Granted and Exercisable and Weighted Average Remaining Contractual Life for Options Outstanding (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2013
Incentive Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of Shares, Outstanding         668,013
Number of Shares, Expected to Vest         666,233
Number of Shares, Exercisable         159,346
Weighted Average Exercise Price, Outstanding $ 7.72 $ 7.71 $ 7.71 $ 7.70 $ 7.72
Weighted Average Exercise Price, Expected to Vest         $ 7.72
Weighted Average Exercisable, Exercise Price $ 8.20 $ 8.07 $ 7.96 $ 7.95 $ 8.20
Weighted Average Remaining Life, Outstanding         83 months
Weighted Average Remaining Contractual Life, Expected to Vest         83 months
Weighted Average Remaining Contractual Life, Exercisable         72 months
Intrinsic Value, Outstanding         $ 12,829
Intrinsic Value, Expected to Vest         12,795
Intrinsic Value, Exercisable         $ 2,982