Acquisitions - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Jan. 16, 2015	Mar. 31, 2015	Mar. 31, 2014
Number Of Employees	3
Purchase price for aquisition	$ 2,424,000
Business Acquisition Purchase Price Allocation Description	The purchase price for this acquisition was $2,424,000 cash paid at closing and the assumption of a liability of $20,000, plus a maximum of an additional $3,000,000 earn out, which is accrued on the consolidated balance sheet as of March 31, 2015, to be paid at a maximum of $1,500,000 per year over the next two years based on the pretax performance of this acquired business.
Tangible assets	1,606,000
Intangible assets	1,500,000
Goodwill	2,338,000
Intangible assets amotized period	6 years
Allocated Share Based Compensation Expense	$ 3,000,000	$ 77,000	$ 9,000