Share-Based Compensation - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($) Installment	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) Installment shares	Jun. 30, 2014 USD ($) shares	Dec. 31, 2006 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted			0	0
Total intrinsic value of options outstanding | $	$ 166,000		$ 166,000
Options exercised			19,591	0
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum option term			10 years
General vesting period			3 years
Annual vesting percentage			33.33%
Expense recorded for share based compensation | $	58,000	$ 30,000	$ 170	$ 59
Restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recorded for share based compensation | $	$ 16,000	$ 34,000	$ 16	72
Number of installments | Installment	2		2
Stock appreciation rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum option term			10 years
General vesting period			3 years
Expense recorded for share based compensation | $			$ 0	$ 0
Stock appreciation rights shares issued					30,000
Stock appreciation rights price of long term restricted share (in dollars per share) | $ / shares					$ 19.00
Shares expired due to employee terminations					15,500