Outstanding Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Less deferred financing costs, net of accumulated amortization	$ (7,012)	$ (7,499)
Long-Term Debt	283,227	318,839
Less current maturities	(5,373)	(2,440)
Long-term portion	277,854	316,399
Line of Credit \| Working Capital Credit Facility, due December 2019
Debt Instrument [Line Items]
Long-Term Debt	68,000	105,000
Line of Credit \| Acquisition Credit Facility, due December 2019
Debt Instrument [Line Items]
Long-Term Debt	44,500	44,500
Senior Notes \| 7.875% notes, due 2021
Debt Instrument [Line Items]
Long-Term Debt	172,400	172,186
Notes Payable, other Payables \| Acquisitions Debt
Debt Instrument [Line Items]
Long-Term Debt	596	687
Notes Payable, other Payables \| Acquisition non-competes
Debt Instrument [Line Items]
Long-Term Debt	1,279	1,629
Insurance and vehicle financing
Debt Instrument [Line Items]
Long-Term Debt	$ 3,464	$ 2,336

Amount of accumulated amortization of debt issuance costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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