Income Taxes Income Tax (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Line Items]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision for income taxes includes the following:

	Year Ended December 31,
	2017			2016			2015
	(Dollars in thousands)
Current provision for income taxes:
Federal	$	10,243		$	10,321		$	10,822
State	3,030			3,375			3,386
	13,273			13,696			14,208
Deferred provision (benefit) for income taxes:
Federal	2,341			(506		)	(1,522		)
State	(224		)	(166		)	(153		)
	2,117			(672		)	(1,675		)
Provision for income taxes	$	15,390		$	13,024		$	12,533

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The effective tax rate differs from the federal statutory rate of 35% due to the following items:

	Year Ended December 31,
	2017			2016			2015
	(Dollars in thousands)
Income before taxes of taxable entities	$	32,531		$	33,950		$	33,911
Provision for income taxes at federal statutory rate	$	(11,386	)	$	(11,883	)	$	(11,869	)
(Increases) decreases in tax resulting from:
Provisional rate adjustment - tax reform	(3,190		)	—			—
State income taxes, net of federal benefit	(1,860		)	(1,977		)	(1,979		)
Manufacturing deduction	958			1,142			1,274
Other	88			(306		)	41
Provision for income taxes	$	(15,390	)	$	(13,024	)	$	(12,533	)
Effective tax rate	47.3		%	38.4		%	37.0		%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of our deferred income tax asset, net are as follows:

	December 31,
	2017			2016
	(Dollars in thousands)
State taxes	$	633		$	1,229
Reserves and accruals	1,893			2,407
Intangible assets	207			359
Share based compensation	1,585			2,118
Inventory	627			1,150
Investments in joint ventures	1,411			1,290
Depreciation and amortization	(39		)	(119		)
Deferred tax asset, net	$	6,317		$	8,434