Share-Based Compensation - Narrative (Details) - USD ($)	1 Months Ended				3 Months Ended
	Mar. 31, 2016	Feb. 29, 2016	Mar. 31, 2015	Feb. 28, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation before income tax benefit					$ 1,066,000	$ 1,231,000
Award vesting period					3 years
Performance unit incentive plan (“PUP”)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation before income tax benefit					$ 535,000	612,000
Awards granted during the period					3,600,000
Stock value payable					900,000
Liability awards recorded	$ 2,700,000				2,700,000		$ 2,400,000
Payments to employees	200,000		$ 2,400,000
Restricted Stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation before income tax benefit					498,000	$ 594,000
Unamortized cost	$ 4,100,000				$ 4,100,000
Recognition Period of Unrecognized cost					1 year 10 months 24 days
Repurchase of Common Stock for Employee Tax Withholding Obligations amount, shares					23,625	32,806
Repurchase of Common Stock for Employee Tax Withholding Obligations amount					$ 700,000	$ 900,000
Shares Available for Grant	890,954				890,954
Restricted stock units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation before income tax benefit					$ 33,000	25,000
Payments to employees		$ 200,000		$ 300,000
Liabilities related to restricted stock	$ 200,000				200,000		$ 300,000
Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unamortized cost	$ 0				$ 0
Exercised					0
Forfeited or expired					0
Exercisable	63,773				63,773		63,773
Outstanding	63,773				63,773		63,773
Weighted-average exercise price	$ 16.62				$ 16.62		$ 16.62
Restructuring Charges
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation before income tax benefit						$ 0
Restructuring Charges | Performance unit incentive plan (“PUP”)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation before income tax benefit					$ 200,000