Restatement of Previously Issued Financial Statements (Impact on Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016		Mar. 31, 2015
Cash flows from operating activities:
Net Income	[1],[2]	$ 900		$ 9,820
Depreciation and amortization	[2]	9,886		7,325
Loss on disposal of property and equipment	[2]	496		291
Provision for bad debts	[2]	764		1,209
Deferred tax provision	[2]	367		607
Share-based compensation	[2]	549		796
Adjustment to contingent purchase obligations	[2]	0		(244)
Excess tax benefit on share-based compensation	[2]	253		(811)
Changes in:
Accounts receivable	[2]	468		(3,745)
Income tax receivable	[2]	(626)		(1,506)
Prepaid expenses and other assets	[2]	3,581		159
Accounts payable	[2]	9,076		(10,540)
Accrued expenses and other liabilities	[2]	(2,241)		8,005
Net cash provided by operating activities	[2]	23,473		11,366
Cash flows from investing activities:
Capital expenditures	[2]	(6,047)		(14,932)
Proceeds from sale of property and equipment	[2]	213		522
Net cash used in investing activities	[2]	(5,834)		(14,410)
Cash flows from financing activities:
Net cash (used in) provided by financing activities	[2]	(18,701)		3,643
Net (decrease) increase in cash and cash equivalents	[2]	(1,062)		599
Cash and cash equivalents:
Beginning of period		7,930	[3]	10,809	[2]
End of period	[2]	6,868	[3]	11,408
As Previously Reported
Cash flows from operating activities:
Net Income		3,065		13,604
Depreciation and amortization		10,215		7,395
Loss on disposal of property and equipment		261		109
Provision for bad debts		337		612
Deferred tax provision		367		607
Share-based compensation		549		796
Adjustment to contingent purchase obligations				0
Excess tax benefit on share-based compensation		253		(811)
Changes in:
Accounts receivable		3,398		(3,858)
Income tax receivable		0		0
Prepaid expenses and other assets		1,647		(1,109)
Accounts payable		7,005		(11,292)
Accrued expenses and other liabilities		(1,671)		6,231
Net cash provided by operating activities		25,426		12,284
Cash flows from investing activities:
Capital expenditures		(7,574)		(15,833)
Proceeds from sale of property and equipment		213		522
Net cash used in investing activities		(7,361)		(15,311)
Cash flows from financing activities:
Net cash (used in) provided by financing activities		(18,665)		3,666
Net (decrease) increase in cash and cash equivalents		(600)		639
Cash and cash equivalents:
Beginning of period		8,664		11,345
End of period		8,064		11,984
Adjustments
Cash flows from operating activities:
Net Income		(2,165)		(3,784)
Depreciation and amortization		(329)		(70)
Loss on disposal of property and equipment		235		182
Provision for bad debts		427		597
Deferred tax provision		0		0
Share-based compensation		0		0
Adjustment to contingent purchase obligations				(244)
Excess tax benefit on share-based compensation		0		0
Changes in:
Accounts receivable		(2,930)		113
Income tax receivable		(626)		(1,506)
Prepaid expenses and other assets		1,934		1,268
Accounts payable		2,071		752
Accrued expenses and other liabilities		(570)		1,774
Net cash provided by operating activities		(1,953)		(918)
Cash flows from investing activities:
Capital expenditures		1,527		901
Proceeds from sale of property and equipment		0
Net cash used in investing activities		1,527		901
Cash flows from financing activities:
Net cash (used in) provided by financing activities		(36)		(23)
Net (decrease) increase in cash and cash equivalents		(462)		(40)
Cash and cash equivalents:
Beginning of period		(734)		(536)
End of period		$ (1,196)		$ (576)

[1] See Note 13 “Restatement of Previously Issued Financial Statements

[2] See Note 13 “Restatement of Previously Issued Financial Statements.”

[3] See Note 13 “Restatement of Previously Issued Financial Statements