Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018
Deferred tax assets:
Net operating loss carryforwards	$ 17,248		$ 30,241
Allowance for doubtful accounts	1,037		1,073
Inventory valuation reserves	629		1,057
Equity compensation	353		548
Goodwill	965		1,089
Accrued compensation	587		342
Foreign tax credit carryforward	3,894		4,041
Settlement liability	3,530		0
Lease liability	3,992		0
Interest expense limitation	0		534
Other	96		50
Total gross deferred tax assets	32,331		38,975
Valuation allowance	(19,878)		(4,042)	$ (15,500)
Total deferred tax assets, net	12,453		34,933
Deferred tax liabilities:
Property and equipment	(3,696)		(6,613)
Intangible assets	(4,597)		(9,657)
ROU asset	(3,793)		0
Prepaid insurance and other	(331)		0
Total gross deferred tax liabilities	(12,417)		(16,270)
Net deferred tax assets	$ 36	$ 18,700	$ 18,663