Employment Agreements - Additional Information (Detail) (President and Chief Executive Officer)	12 Months Ended
	Dec. 31, 2014
President and Chief Executive Officer
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Obligation payable	18 months
Employee benefit payments period	2 years
Non competition covenant period	2 years
Employment agreement extension period	1 year