Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Consolidated net income	$ 26,039	$ 20,305
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on extinguishment of debt	1,308	2,384
Gain on disposal of property, plant, and equipment	(12)	0
Depreciation expense	1,855	1,596
Amortization of other intangible assets	1,079	557
Amortization of debt discount and deferred financing costs	1,018	712
Deferred income taxes	(4)	2,806
Stock compensation expense	2,480	1,056
Changes in operating assets and liabilities:
Accounts receivable	(3,556)	(3,192)
Inventories	(6,704)	(18,840)
Other current assets	(801)	(5,971)
Other assets	106	144
Accounts payable	1,069	4,442
Accrued postretirement liabilities	(125)	(107)
Accrued liabilities and other	(3,739)	(4,918)
Net cash provided by operating activities	20,013	974
Cash flows from investing activities:
Capital expenditures	(4,060)	(1,528)
Restricted cash, MSA escrow deposits	29,713	(2,234)
Acquisitions, net of cash acquired	(7,703)	(19,161)
Proceeds on the sale of property, plant and equipment	117	0
Payments for investments	(1,421)	0
Issuance of note receivable	0	(6,500)
Receipt of note receivable repayment including prepayment penalty	0	7,475
Net cash (used in) provided for by investing activities	16,646	(21,948)
Cash flows from financing activities:
Proceeds from 2018 revolving credit facility	0	30,000
Payments of 2018 revolving credit facility	(26,000)	0
Payments for call options	(20,528)	0
Payment of dividends	(2,646)	(1,537)
Proceeds from (payments of) 2017 revolving credit facility, net	0	(8,000)
Payments of VaporBeast Note Payable	0	(2,000)
Proceeds from release of restricted funds	0	1,107
Payments of financing costs	(6,997)	(3,286)
Exercise of options	639	779
Payment to terminate acquired capital lease	0	(170)
Surrender of restricted stock	(84)	0
Redemption of options	(12)	(623)
Net cash provided by financing activities	70,872	16,657
Net increase (decrease) in cash	107,531	(4,317)
Cash, beginning of period:
Unrestricted	3,306	2,607
Restricted	2,361	4,709
Total cash at beginning of period	5,667	7,316
Cash, end of period:
Unrestricted	81,124	1,631
Restricted	32,074	1,368
Total cash at end of period	113,198	2,999
Supplemental schedule of noncash investing activities:
Hold back for acquisition	265	0
Supplemental schedule of noncash financing activities:
Accrued expenses incurred for financing costs	123	0
Issuance of shares for acquisition	0	5,292
Issuance of note payable for acquisition	0	4,000
Dividends declared not paid	897	788
2018 First Lien Term Loan [Member]
Cash flows from financing activities:
Proceeds from term loan	0	156,000
Payments of term loan	(6,000)	0
2018 Second Lien Term Loan [Member]
Cash flows from financing activities:
Proceeds from term loan	0	40,000
Payments of term loan	(40,000)	0
2017 First Lien Term Loans [Member]
Cash flows from financing activities:
Payments of term loan	0	(140,613)
2017 Second Lien Term Loan [Member]
Cash flows from financing activities:
Payments of term loan	0	(55,000)
Convertible Senior Notes [Member]
Cash flows from financing activities:
Proceeds from Convertible Senior Notes	$ 172,500	$ 0