CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Cash flows from operating activities:
Net loss	$ (1,109)	$ (2,729)	$ (1,323)	$ 68	$ (3,838)	$ (1,255)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation, amortization and accretion	2,109		1,217		3,121	2,279
Provision for bad debts					397	314
Provision for obsolete inventory					(522)	974
Equity based compensation	600		200		850	431
Deferred income tax					(4,065)	(361)
Changes in operating assets and liabilities:
Accounts receivable					(284)	(3,655)
Inventories					1,876	(5,976)
Other current assets					(3,406)	30
Other assets					150	(283)
Accounts payable					(2,208)	6,740
Accrued salaries and benefits					(240)	(122)
Accrued expenses					2,840	(1,151)
Customer deposits and deferred service revenue					1,548	3,110
Other long-term liabilities					(2,760)	(486)
Net cash (used in) provided by operating activities					(6,541)	589
Cash flows from investing activities:
Capital expenditures					(1,693)	(1,737)
Capitalization of software costs					(1,624)	(2,098)
Net cash used in investing activities					(3,317)	(3,835)
Cash flows from financing activities:
Payments of long-term debt					0	(96)
Payment of contingent consideration for Brink Earn Out					(2,550)	(10,059)	$ (2,600)
Payments of bank borrowings					(17,459)	14,950
Proceeds from bank borrowings					9,640	0
Proceeds from notes payable, net of issuance costs					75,039	0
Proceeds from stock options					243	731
Net cash provided by financing activities					64,913	5,526
Effect of exchange rate changes on cash and cash equivalents					121	(202)
Net increase in cash and cash equivalents					55,176	2,078
Cash and cash equivalents at beginning of period		$ 3,485		$ 6,600	3,485	6,600	6,600
Cash and equivalents at end of period	$ 58,661		$ 8,678		58,661	8,678	$ 3,485
Cash paid during the period for:
Interest					153	78
Income taxes, net of refunds					125	$ 83
Additions to right-of-use assets and deferred rent obtained from operating lease liabilities					$ 3,359