Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of income tax expense and effective income tax rates

	December 31,
	2015			2014			2013
Current taxes:
Domestic	$	16,036		$	8,424		$	4,982
Foreign		254			—			6
		16,290			8,424			4,988
Deferred taxes:
Domestic		1,656			2,238			2,347
Foreign		(100)			(371)			(347)
		1,556			1,867			2,000
Provision for income taxes	$	17,846		$	10,291		$	6,988
Income before income taxes
Domestic	$	50,692		$	27,984		$	19,954
Foreign		(1,585)			(1,721)			(1,767)
Total	$	49,107		$	26,263		$	18,187
Effective income tax rate		36.3	%		39.1	%		38.4	%

Schedule of effective income tax rate reconciliation

	December 31,
	2015		2014		2013
Tax at federal statutory rate	35.0	%	35.0	%	34.0	%
Permanent differences	(1.6)		(2.9)		(1.7)
State income taxes	2.0		3.1		4.8
Foreign taxes	0.3		2.5		(1.6)
Other	0.6		1.4		2.9
Effective income tax rate	36.3	%	39.1	%	38.4	%

Schedule of components of deferred tax assets and liabilities

	December 31,
	2015		2014
Deferred tax assets:
Allowance for doubtful accounts	$	28	$	65
Inventory valuation		279		607
Accrued expense		927		372
Unrealized foreign exchange loss		652		634
Net operating loss carryforward		1,999		2,148
Goodwill		—		2,159
Deferred financing costs		1,564		—
Asset retirement obligation		179		292
Stock compensation		322		1,853
Total gross deferred tax assets		5,950		8,130
Valuation allowance		(3,717)		(4,120)
Net deferred tax assets		2,233		4,010
Deferred tax liabilities:
Plant, property and leasehold improvements		(5,881)		(4,238)
Intangibles		(18,962)		(11,903)
Prepaid expense		(1,463)		(1,045)
Total gross deferred tax liabilities		(26,306)		(17,186)
Net deferred tax liabilities	$	(24,073)	$	(13,176)

Schedule of net deferred tax assets and liabilities as reflected in the consolidated balance sheets

	December 31,
	2015		2014
Current deferred tax assets	$	—	$	634
Long-term deferred tax liabilities		(24,073)		(13,810)
Net deferred tax (liabilities)	$	(24,073)	$	(13,176)