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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash flows from operating activities:    
Net income $ 3,151 $ 2,200
Depreciation and amortization 915 909
Deferred income taxes 37 (28)
Other, net 14 58
Change in assets and liabilities:    
Accounts receivable, net (2,644) (3,121)
Inventories, net (381) 627
Accounts payable and accrued liabilities (2,303) (3,066)
Accounts with affiliates 1,079 648
Prepaids and other, net (78) (675)
Net cash used in operating activities (210) (2,448)
Cash flows from investing activities:    
Capital expenditures (609) (1,221)
Note receivable from affiliate:    
Collections 12,500  
Advances (14,100)  
Net cash used in investing activities (2,209) (1,221)
Cash flows from financing activities -    
Dividends paid (621) (620)
Cash and cash equivalents - net change from:    
Operating, investing and financing activities (3,040) (4,289)
Balance at beginning of period 33,153 52,347
Balance at end of period 30,113 48,058
Supplemental disclosures -    
Cash paid for income taxes $ 585 $ 565