Share-Based Compensation - Additional Information (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Stock options [Member]	Sep. 30, 2013 Stock options [Member]	Sep. 30, 2014 Stock options [Member]	Sep. 30, 2013 Stock options [Member]	Sep. 30, 2014 Restricted stock [Member] Installment	Sep. 30, 2013 Restricted stock [Member]	Sep. 30, 2014 Restricted stock [Member] Installment	Sep. 30, 2013 Restricted stock [Member]	Sep. 30, 2014 Stock appreciation rights (SARs) [Member]	Sep. 30, 2013 Stock appreciation rights (SARs) [Member]	Dec. 31, 2006 Stock appreciation rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted			117,000	137,363
Maximum option term							10 years						10 years
General vesting period							3 years						3 years
Annual vesting percentage							33.33%
Expense recorded for share based compensation					$ 0	$ 0	$ 131	$ 52	$ 35	$ 52	$ 107	$ 173	$ 0	$ 10
Options outstanding with exercise price below quoted price (shares)	282,696		282,696
Total intrinsic value of options outstanding	$ 1,362		$ 1,362
Number of installments									2		2
Stock appreciation rights shares issued															30,000
Stock appreciation rights price of long term restricted share (in dollars per share)															$ 19.00
Shares expired due to employee terminations															15,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 3.57	$ 2.35	$ 3.24	$ 2.15