Income taxes (Tables)

12 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Components of Income (Loss) Before Income Taxes

The components of income (loss) before provision for income taxes are as follows (in thousands):

	Year ended March 31,			Three months ended March 31, (transition period)			Year ended December 31,
	2020			2019			2018		2017
Domestic	$	24,479		$	(21,673	)	$	17,405	$	22,409
Foreign	(410		)	500			551		60
Total	$	24,069		$	(21,173	)	$	17,956	$	22,469

Schedule of Components of (Provision) Benefit for Income Taxes

The components of the benefit (provision) for income taxes are as follows (in thousands):

	Year ended March 31,			Three months ended March 31, (transition period)			Year ended December 31,
	2020			2019			2018			2017
Current:
U.S. federal	$	(2,681	)	$	(13	)	$	(2,414	)	$	(2,058	)
State	(1,066		)	(139		)	(948		)	(369		)
Foreign	5			(22		)	(8		)	—
Total current	(3,742		)	(174		)	(3,370		)	(2,427		)
Deferred:
U.S. federal	(2,532		)	3,096			1,005			13,246
State	99			368			101			(21		)
Foreign	(10		)	(31		)	(167		)	208
Total deferred	(2,443		)	3,433			939			13,433
Total (provision) benefit for income taxes	$	(6,185	)	$	3,259		$	(2,431	)	$	11,006

Schedule of Reconciliation of Federal Statutory Rate to Company's Effective Tax Rate

The following table presents a reconciliation of the federal statutory rate to the Company’s effective tax rate:

	Year ended March 31,		Three months ended March 31, (transition period)		Year ended December 31,
	2020		2019		2018		2017
Federal statutory rate	21.0	%	21.0	%	21.0	%	35.0	%
Federal tax deferred rate change	—	%	—	%	—	%	(53.8	)%
State tax, net of federal benefit	3.7	%	1.2	%	2.6	%	0.6	%
State tax deferred rate change, net of federal benefit	0.1	%	—	%	0.9	%	0.9	%
Nondeductible business expenses	0.8	%	(0.1	)%	1.4	%	—	%
Provision-to-return adjustment	—	%	—	%	(3.9	)%	—	%
Uncertain tax positions	(0.2	)%	(0.1	)%	(1.3	)%	(1.7	)%
Stock based compensation	(0.4	)%	(6.1	)%	(8.6	)%	(28.1	)%
Others	0.7	%	(0.5	)%	1.4	%	(1.9	)%
Effective tax rate	25.7	%	15.4	%	13.5	%	(49.0	)%

Schedule of Components of Net Deferred Taxes

The deferred tax assets and liabilities are reported in the accompanying balance sheets as follows (in thousands):

	March 31, 2020		March 31, 2019		December 31, 2018
Deferred tax assets	$	15	$	25	$	56
Deferred tax liabilities	21,892		16,753		20,217
Net deferred tax liabilities	$	21,877	$	16,728	$	20,161

The components of net deferred taxes arising from temporary differences are as follows (in thousands):

	March 31, 2020		March 31, 2019		December 31, 2018
Deferred tax assets:
Compensation	$	760	$	895	$	928
Inventories and receivables	3,472		2,915		3,008
Accrued expenses	1,996		667		424
Stock compensation	3,706		3,627		5,175
Net operating losses	92		236		43
Right of use liability	3,443		4,643		—
Other	558		736		898
Deferred tax assets	14,027		13,719		10,476
Deferred tax liabilities:
Goodwill	3,468		2,857		2,618
Fixed assets	3,294		1,734		2,405
Intangible assets	25,287		24,077		24,591
Right of use asset	3,292		887		—
Other	563		892		1,023
Deferred tax liabilities	35,904		30,447		30,637
Net deferred tax liabilities	$	21,877	$	16,728	$	20,161

Schedule of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

	Year ended March 31,			Three months ended March 31, (transition period)		Year ended December 31,
	2020			2019		2018			2017
Balance at beginning of year	$	581		$	571	$	764		$	1,208
Increases for prior year tax positions	32			—		—			63
Increases for current year tax positions	90			10		173			68
Decreases for prior year tax positions	—			—		(8		)	(1		)
Decreases due to settlements	(29		)	—		—			(32		)
Decreases due to statutes lapsing	(197		)	—		(358		)	(542		)
Balance at end of year	$	477		$	581	$	571		$	764