Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities
Net income	$ 7,059	$ 5,070
Adjustments to Reconcile Net Income to Net Cash Provided by (used in) Operating Activities:
Depreciation and amortization	3,304	3,091
Distribution received from equity method investee	3,300	0
Deferred income taxes, including change in valuation allowance	(622)	2,027
Share-based compensation	652	205
Equity method investment earnings	(517)	(1,352)
Changes in Operating Assets and Liabilities:
Receivables, net	(534)	(194)
Inventory	(9,682)	(3,213)
Prepaid expenses	(289)	(564)
Accounts payable	(4,236)	819
Accounts payable to affiliate, net	11	685
Accrued expenses	(3,958)	(1,248)
Income taxes payable	4,112	962
Deferred credit	(174)	(160)
Accrued retirement health and life insurance benefits	(67)	(127)
Other	0	120
Net cash provided by (used in) operating activities	(1,641)	6,121
Cash Flows from Investing Activities
Additions to property and equipment	(3,053)	(5,030)
Net cash used in investing activities	(3,053)	(5,030)
Cash Flows from Financing Activities
Principal payments on long-term debt	(438)	(398)
Proceeds from credit facility	8,099	1,086
Payments on credit facility	(3,646)	(738)
Loan fees incurred with borrowings	(68)	(291)
Net cash provided by (used in) financing activities	3,947	(341)
Increase (decrease) in cash and cash equivalents	(747)	750
Cash and cash equivalents, beginning of year	747	5,641
Cash and cash equivalents, end of period	$ 0	$ 6,391