Share-Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized	$ 480	$ 377
Compensation cost not yet recognized, period for recognition	9 months 26 days
Fair value of shares vested	305	192
Options granted (in shares)	137,363	35,000
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recorded for stock options	60	14	1
Maximum option term	10 years
General vesting period	3 years
Weighted average fair value of options granted	$ 2.48
Total intrinsic value of options exercised	0
Total intrinsic value of options outstanding	283
Restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recorded for stock options	201	296	188
Shares issued	10,000	62,105	40,000
Forfeited due to employee terminations	7,500		2,500
Purchase price of long term restricted share	$ 9.48	$ 5.39	$ 5.28
Number of installment	2
Stock appreciation rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recorded for stock options	$ 4	$ 0	$ 0
Maximum option term	10 years
General vesting period	3 years
Purchase price of long term restricted share	$ 10,000.00
Stock appreciation rights shares issued				30,000
Stock appreciation rights price of long term restricted share				$ 19.00
Shares expired due to employee terminations				15,500