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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 15,325	$ 13,203	$ 10,457
Depreciation and amortization	3,454	3,673	3,698
Deferred income taxes	86	(1,775)	(114)
Other, net	289	181	330
Change in assets and liabilities:
Accounts receivable, net	(1,709)	(115)	(1,596)
Inventories, net	(1,846)	(473)	(37)
Accounts payable and accrued liabilities	1,619	(962)	153
Accounts with affiliates	152	(971)	970
Other, net	(207)	(178)	3
Net cash provided by operating activities	17,163	12,583	13,864
Cash flows from investing activities:
Capital expenditures	(3,117)	(2,796)	(3,175)
Note receivable from affiliate:
Collections	51,000	41,300	9,200
Advances	(46,800)	(52,100)	(36,600)
Net cash provided by (used in) investing activities	1,083	(13,596)	(30,575)
Cash flows from financing activities -
Dividends paid	(2,487)	(2,485)	(2,483)
Net increase (decrease)	15,759	(3,498)	(19,194)
Balance at beginning of year	29,655	33,153	52,347
Balance at end of year	45,414	29,655	33,153
Supplemental disclosures -
Cash paid for income taxes	$ 4,370	$ 6,709	$ 4,646

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