Condensed Consolidated Statement of Changes in Equity - USD ($) $ in Thousands	Aegis Transaction Agreement [Member] Common Stock [Member]	Aegis Transaction Agreement [Member] Additional Paid-in Capital [Member]	Aegis Transaction Agreement [Member] Retained Earnings [Member]	Aegis Transaction Agreement [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Aegis Transaction Agreement [Member] Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]	Aegis Transaction Agreement [Member] Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]	Aegis Transaction Agreement [Member] Parent [Member]	Aegis Transaction Agreement [Member] Noncontrolling Interest [Member]	Aegis Transaction Agreement [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]	Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Mar. 31, 2018										20,600,000
Balance at Mar. 31, 2018										$ 206	$ 153,704	$ (6,815)	$ (110)	$ 0	$ (292)	$ 146,693	$ 47,452	$ 194,145
Issuance of common stock (in shares)	166,667									453,264
Issuance of common stock	$ 2	$ 1,998	$ 0	$ 0	$ 0	$ 0	$ 2,000	$ 0	$ 2,000	$ 4	2,601	0	0	0	0	2,605	0	2,605
Purchase accounting entries due to the Aegis transactions (in shares)										16,226,392
Purchase accounting entries due to the Aegis transactions										$ 162	108,340	0	0	0	0	108,502	0	108,502
Share-based compensation expenses										0	674	0	0	0	0	674	0	674
Net income (loss)										0	0	(24,312)	0	0	0	(24,312)	2,036	(22,276)
Dividend paid in cash										0	0	0	0	0	0	0	(3,137)	(3,137)
Other comprehensive loss for the period										$ 0	0	0	(3,879)	(15)	(1,251)	(5,145)	(995)	$ (6,140)
Balance (in shares) at Dec. 31, 2018										37,446,323								37,446,323
Balance at Dec. 31, 2018										$ 374	267,317	(31,127)	(3,989)	(15)	(1,543)	231,017	45,356	$ 276,373
Issuance of common stock (in shares)										1,079,313
Issuance of common stock										$ 11	6,699	0	0	0	0	6,710	0	6,710
Share-based compensation expenses										0	1,516	0	0	0	0	1,516	0	1,516
Net income (loss)										0	0	(15,018)	0	0	0	(15,018)	1,737	(13,281)
Other comprehensive loss for the period										0	0	0	(579)	490	(386)	(475)	(354)	(829)
Warrant contra expenses										$ 0	1,295	0	0	0	0	1,295	0	$ 1,295
Balance (in shares) at Dec. 31, 2019										38,525,636								38,525,636
Balance at Dec. 31, 2019										$ 385	$ 276,827	$ (46,145)	$ (4,568)	$ 475	$ (1,929)	$ 225,045	$ 46,739	$ 271,784