Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Sales		$ 92,071	$ 85,903	$ 176,935	$ 170,485
Less: excise taxes		6,717	5,336	11,168	10,922
Net sales		85,354	80,567	165,767	159,563
Cost of sales	[1]	67,826	72,259	134,851	144,454
Gross profit		17,528	8,308	30,916	15,109
Selling, general and administrative expenses		8,025	5,166	14,505	10,238
Loss on insurance recoveries		0	70	0	70
Income from operations		9,503	3,072	16,411	4,801
Interest expense, net		(129)	(218)	(260)	(416)
Equity method investment earnings		3,096	2,331	4,448	5,666
Income before income taxes		12,470	5,185	20,599	10,051
Provision for income taxes		4,599	86	7,658	167
Net income		7,871	5,099	12,941	9,884
Other comprehensive income, net of tax		330	500	258	325
Comprehensive income		$ 8,201	$ 5,599	$ 13,199	$ 10,209
Basic and diluted earnings per share (in usd per share)		$ 0.44	$ 0.28	$ 0.72	$ 0.55
Dividends and dividend equivalents per common share (in usd per share)		$ 0	$ 0	$ 0.06	$ 0.05

[1] Includes related party purchases of $10,145 and $9,008 for the quarters ended June 30, 2015 and 2014, respectively. Includes related party purchases of $19,437 and $16,140 for the year to date periods ended June 30, 2015 and 2014. See Note 2. Equity Method Investments.