Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Components of Benefit from Income Taxes

For the years ended December 31,	2018			2017			2016
(dollars in thousands)
Current (benefit) provision
Federal	$	(1	)	$	(28	)	$	8
State		86			21			5
Deferred provision (benefit)
Federal		2,100			114			(3,501	)
State		(250	)		568			(38	)
Benefit related to a change in enacted tax law		-			(8,276	)		-
Provision (benefit) for income taxes	$	1,935		$	(7,601	)	$	(3,526	)

Schedule of Effective Income Tax Rate Reconciliation

For the years ended December 31,		2018				2017				2016
Tax provision (benefit) at statutory tax rate	$		2,645		$		3		$		(3,106	)
State income taxes, net of federal impact			74				3				(39	)
Research and development tax credit			(874	)			(425	)			(439	)
Valuation allowance, net of federal impact			(167	)			475				-
Impact of changes in enacted tax law			-				(8,276	)			-
Adjustments to deferred taxes			277				506				4
Other, net			(20	)			113				54
Provision (benefit) for income taxes	$		1,935		$		(7,601	)	$		(3,526	)

Schedule of Deferred Tax Assets and Liabilities

December 31,	2018		2017
(dollars in thousands)
Noncurrent deferred income taxes:
Federal and state tax carryforwards	$	8,331	$	12,894
Inventory		787		549
Share-based compensation		1,909		2,186
Receivables		239		194
Accrued liabilities		836		349
Other		5		32
Total deferred tax assets	$	12,107	$	16,204
Deferred tax liabilities:
Property, plant and equipment	$	22,951	$	24,970
Other		637		839
Total deferred tax liabilities	$	23,588	$	25,809
Total noncurrent deferred income taxes	$	11,481	$	9,605