Summary of Quarterly Results of Operations (Parenthetical) (Detail) (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information [Line Items]
Integration of Syndicated and other acquisition related expenses	$ 1,500,000	$ 555,000
Goodwill and other asset impairments				22,000,000		22,012,000
Deferred tax assets valuation allowances	22,996,000		16,074,000	14,500,000	22,996,000	16,074,000
Deferred tax assets additional valuation allowances			$ 1,600,000		$ 6,900,000