Restatement of Previously Issued Financial Statements - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Operating activities
Net income (loss) from continuing operations	$ (1,354)	$ (662)
Adjustments to reconcile net income (loss) from continuing operations to net cash used for operating activities:
Depreciation and amortization	792	1,048
Deferred income taxes	1,182	2,311
Stock compensation expense	555	807
Other	343	(31)
Net changes in operating assets and liabilities:
Affiliate payable	0	9
Trade receivables	34,811	19,889
Inventory	17,047	2,263
Other assets	(5,637)	(2,698)
Accounts payable	(49,550)	(45,593)
Other liabilities	(8,231)	(17,582)
Net cash used for operating activities from continuing operations	(10,042)	(40,239)
Investing activities
Expenditures for property, plant and equipment	(625)	(854)
Other		0
Net cash used for investing activities from continuing operations	(625)	(854)
Financing activities
Net additions to revolving credit agreements	11,102	38,165
Cash dividends paid	(1,226)	(1,177)
Net cash provided by financing activities from continuing operations	9,876	36,988
Cash flows from discontinued operations
Net cash used for operating activities from discontinued operations	(4,968)	(9,896)
Net cash provided by investing activities from discontinued operations	6	21
Net cash provided by financing activities from discontinued operations	0	9,400
Cash used for discontinued operations	(4,962)	(475)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	1,376	(51)
Cash, cash equivalents and restricted cash
(Decrease) increase for the year from continuing operations	585	(4,156)
Increase (decrease) for the year from discontinued operations	(4,962)	(475)
Balance at the beginning of the period	7,164	6,352	$ 6,352
Balance at the end of the period	$ 2,787	1,721	7,164
As Previously Reported
Operating activities
Net income (loss) from continuing operations		(1,761)
Adjustments to reconcile net income (loss) from continuing operations to net cash used for operating activities:
Depreciation and amortization		1,249
Deferred income taxes		2,178
Stock compensation expense		807
Other		23
Net changes in operating assets and liabilities:
Affiliate payable		6
Trade receivables		20,323
Inventory		2,593
Other assets		(1,824)
Accounts payable		(52,353)
Other liabilities		(21,376)
Net cash used for operating activities from continuing operations		(50,135)
Investing activities
Expenditures for property, plant and equipment		(862)
Other		29
Net cash used for investing activities from continuing operations		(833)
Financing activities
Net additions to revolving credit agreements		47,565
Cash dividends paid		(1,177)
Net cash provided by financing activities from continuing operations		46,388
Cash flows from discontinued operations
Net cash used for operating activities from discontinued operations		0
Net cash provided by investing activities from discontinued operations		0
Net cash provided by financing activities from discontinued operations		0
Cash used for discontinued operations		0
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(51)
Cash, cash equivalents and restricted cash
(Decrease) increase for the year from continuing operations		(4,631)
Increase (decrease) for the year from discontinued operations		0
Balance at the beginning of the period		6,352	6,352
Balance at the end of the period		1,721
Restatement Impacts
Operating activities
Net income (loss) from continuing operations		(1,624)
Adjustments to reconcile net income (loss) from continuing operations to net cash used for operating activities:
Depreciation and amortization		0
Deferred income taxes		110
Stock compensation expense		0
Other		(59)
Net changes in operating assets and liabilities:
Affiliate payable		0
Trade receivables		344
Inventory		111
Other assets		(742)
Accounts payable		(15)
Other liabilities		1,875
Net cash used for operating activities from continuing operations		0
Investing activities
Expenditures for property, plant and equipment		0
Other		0
Net cash used for investing activities from continuing operations		0
Financing activities
Net additions to revolving credit agreements		0
Cash dividends paid		0
Net cash provided by financing activities from continuing operations		0
Cash flows from discontinued operations
Net cash used for operating activities from discontinued operations		0
Net cash provided by investing activities from discontinued operations		0
Net cash provided by financing activities from discontinued operations		0
Cash used for discontinued operations		0
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		0
Cash, cash equivalents and restricted cash
(Decrease) increase for the year from continuing operations		0
Increase (decrease) for the year from discontinued operations		0
Balance at the beginning of the period		0	0
Balance at the end of the period		0
As Restated
Operating activities
Net income (loss) from continuing operations		(3,385)
Adjustments to reconcile net income (loss) from continuing operations to net cash used for operating activities:
Depreciation and amortization		1,249
Deferred income taxes		2,288
Stock compensation expense		807
Other		(36)
Net changes in operating assets and liabilities:
Affiliate payable		6
Trade receivables		20,667
Inventory		2,704
Other assets		(2,566)
Accounts payable		(52,368)
Other liabilities		(19,501)
Net cash used for operating activities from continuing operations		(50,135)
Investing activities
Expenditures for property, plant and equipment		(862)
Other		29
Net cash used for investing activities from continuing operations		(833)
Financing activities
Net additions to revolving credit agreements		47,565
Cash dividends paid		(1,177)
Net cash provided by financing activities from continuing operations		46,388
Cash flows from discontinued operations
Net cash used for operating activities from discontinued operations		0
Net cash provided by investing activities from discontinued operations		0
Net cash provided by financing activities from discontinued operations		0
Cash used for discontinued operations		0
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(51)
Cash, cash equivalents and restricted cash
(Decrease) increase for the year from continuing operations		(4,631)
Increase (decrease) for the year from discontinued operations		0
Balance at the beginning of the period		6,352	$ 6,352
Balance at the end of the period		1,721
Recasting Impacts
Operating activities
Net income (loss) from continuing operations		2,723
Adjustments to reconcile net income (loss) from continuing operations to net cash used for operating activities:
Depreciation and amortization		(201)
Deferred income taxes		23
Stock compensation expense		0
Other		5
Net changes in operating assets and liabilities:
Affiliate payable		3
Trade receivables		(778)
Inventory		(441)
Other assets		(132)
Accounts payable		6,775
Other liabilities		1,919
Net cash used for operating activities from continuing operations		9,896
Investing activities
Expenditures for property, plant and equipment		8
Other		(29)
Net cash used for investing activities from continuing operations		(21)
Financing activities
Net additions to revolving credit agreements		(9,400)
Cash dividends paid		0
Net cash provided by financing activities from continuing operations		(9,400)
Cash flows from discontinued operations
Net cash used for operating activities from discontinued operations		(9,896)
Net cash provided by investing activities from discontinued operations		21
Net cash provided by financing activities from discontinued operations		9,400
Cash used for discontinued operations		(475)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		0
Cash, cash equivalents and restricted cash
(Decrease) increase for the year from continuing operations		475
Increase (decrease) for the year from discontinued operations		$ (475)