Long Term Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt including current portion	$ 116,400,000us-gaap_LongTermDebt	$ 46,900,000us-gaap_LongTermDebt
Current portion of long-term obligations	(12,000,000)	(13,904,000)
Total	104,400,000us-gaap_LongTermDebtNoncurrent	33,000,000us-gaap_LongTermDebtNoncurrent
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt including current portion	33,000,000	45,000,000
Revolving Credit Facilities [Member]
Debt Instrument [Line Items]
Long-term debt including current portion	15,000,000	0
Second Lien Credit Agreement Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt including current portion	70,000,000	0
Discount on long-term debt	(1,600,000)	0
Promissory Notes [Member]
Debt Instrument [Line Items]
Long-term debt including current portion	$ 0	$ 1,900,000

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

+ References

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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