Shareholders' Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 28, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, amount recognized		$ 24	$ 29	$ 52	$ 34
Common shares sought to sell in private offering				3,800,000
Sale of common shares under private placement	1,329,000
Closing under private placement of common share at per share value	$ 1.90
Net proceeds of the private placement	2,500
Pre-payment on the Credit Facility Term Loan	$ 8,000
2005 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options granted				120,000	180,000
2011 Director's Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options granted				140,000