Long-Term Debt and Notes Payable - Additional Information (Detail) (USD $)	9 Months Ended	0 Months Ended				9 Months Ended	0 Months Ended
	Oct. 31, 2012 Predecessor [Member] Revolving Credit Facility [Member]	Oct. 31, 2013 Credit Agreement [Member]	Aug. 02, 2013 Credit Agreement [Member]	Oct. 31, 2013 Credit Agreement [Member] Maximum [Member]	Oct. 31, 2013 Credit Agreement [Member] Minimum [Member]	Oct. 31, 2013 Credit Agreement [Member] Predecessor [Member] Revolving Credit Facility [Member]	Oct. 31, 2013 Credit Agreement [Member] Base Rate [Member]	Oct. 31, 2013 Credit Agreement [Member] Eurodollar [Member]
Line of Credit Facility [Line Items]
Maximum borrowing amount on a revolving basis			$ 50,000,000
Revolving credit facility expiration period			3 years
Line of credit agreement collateralized by percentage of own capital stock			65.00%
Credit Agreement basis points							1.50%	2.50%
Commitment fee on the unused portion of the Credit Agreement				0.50%	0.375%
Available borrowings under the revolving credit facility to secure letters of credit				10,000,000
Leverage Ratio		2.00
Fixed Charge Coverage Ratio		1.25
Adjusted EBITDA		22,000,000
Capital Expenditures to Adjusted EBITDA		1.0
Additional indebtedness		5,000,000
Average borrowings under the revolving credit facility	$ 14,084,000					$ 3,031,000