Commitments and Contingencies - Additional Information (Detail) (USD $)	0 Months Ended			12 Months Ended			0 Months Ended	9 Months Ended
	Nov. 17, 2014	Jul. 08, 2014	Jun. 23, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 31, 2014	Mar. 31, 2015
Loss Contingencies [Line Items]
Rental expense under operating leases				$ 3,000,000	$ 4,100,000	$ 4,500,000
Purchase commitments				55,000,000
Period of time to achieve earnings and cash building targets				6 months
Accrued bonus liability				5,500,000
Loss Contingency, Damages Paid, Value			6,000,000
Consideration For Litigation Settlement Paid By Companys Insurers		1,700,000	1,700,000
Legal Settlements Promissory Notes Issued Amount		5,000,000	5,000,000
Amount for Share Price Fluctuation Related to Litigation Settlement	789,600
Loss Contingency Damages Paid Net Of Portion Paid By Companys Insurers		4,300,000
Revolving Credit Facility
Loss Contingencies [Line Items]
Secured note maturity period							5 years
Company's unused borrowing capacity under credit facility				25,000,000			25,000,000
Line of Credit Facility, Amount Outstanding				5,200,000
Available borrowings				12,100,000
Letter of Credit
Loss Contingencies [Line Items]
Company's unused borrowing capacity under credit facility				3,000,000
Unrestricted Stock
Loss Contingencies [Line Items]
Legal Settlements Shares Issued Value		5,000,000	5,000,000
Common Stock Distribution (shares)		2,407,318
Secured Promissory Note
Loss Contingencies [Line Items]
Secured note maturity period			30 months
Secured note interest rate percentage			5.00%
Scenario, Forecast
Loss Contingencies [Line Items]
Total estimated expense								$ 11,000,000