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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash flows from operating activities:      
Net (loss) income $ (25,580) $ (29,979) $ 64,727
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:      
Effect of change in revenue recognition (17,382) 0 0
Share-based compensation 12,064 14,768 21,195
Depreciation 6,546 5,882 4,087
Amortization of intangible assets 1,039 1,034 1,678
Amortization of inventory fair value step-up 0 0 203
Amortization of deferred financing costs and debt discount 1,431 137 176
Amortization of discount on notes receivable 0 (190) (12)
Non cash lease expenses 947 0 0
Change in fair value of earn-out consideration 0 0 (3,560)
Loss on fixed asset disposal 318 0 0
Intangible asset impairment 1,258 0 590
Change in deferred income taxes 0 25,541 (26,670)
Loss on divestiture of Stability 0 0 1,048
Increase (decrease) in cash, net of effects of divestiture, resulting from changes in:      
Accounts receivable (10,938) 0 (479)
Inventory 6,882 (6,519) 2,747
Prepaid expenses 4 (4,548) (305)
Income tax receivable 436 202 (656)
Other assets (5,770) 3,562 225
Accounts payable (6,171) 6,585 (1,324)
Accrued compensation (1,722) 2,083 8,397
Accrued expenses (57) 16,074 (3,534)
Income taxes 0 0 (5,611)
Other liabilities (2,717) 1,164 17
Net cash flows (used in) provided by operating activities (39,412) 35,796 62,939
Cash flows from investing activities:      
Purchases of property and equipment (1,752) (9,419) (5,126)
Proceeds from property and equipment sale 0 30 0
Principal payments from note receivable 2,722 778 0
Patent application costs (466) (609) (271)
Net cash flows provided by (used in) investing activities 504 (9,220) (5,397)
Cash flows from financing activities:      
Proceeds from term loan 72,750 0 0
Repayment of term loan (1,875) 0 0
Deferred financing costs (6,650) 0 0
Shares repurchased for tax withholdings on vesting of restricted stock (1,474) (4,914) (4,082)
Proceeds from exercise of stock options 108 3,555 11,987
Shares repurchased under repurchase plan 0 (7,572) (68,263)
Payments under capital lease obligations   (3) (29)
Net cash flows provided by (used in) financing activities 62,859 (8,934) (60,387)
Net change in cash 23,951 17,642 (2,845)
Cash and cash equivalents, beginning of year 45,118 27,476 30,321
Cash and cash equivalents, end of year $ 69,069 $ 45,118 $ 27,476