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Select Condensed Consolidated Balance Sheet Details | 3 Months Ended
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Mar. 31, 2017
Balance Sheet Related Disclosures [Abstract] |
Select Condensed Consolidated Balance Sheet Details | 3. Select Condensed Consolidated Balance Sheet Details Accounts Receivable, net Accounts receivable, net consist of the following (in thousands):
|  | March 31, 2017 |  |  | December 31, 2016 |
Accounts receivable |  | $ | 15,190 |  |  | $ | 19,870 |
Allowance for doubtful accounts |  |  | (978 | ) |  |  | (1,358 | )
Accounts receivable, net |  | $ | 14,212 |  |  | $ | 18,512 |
Inventories, net Inventories, net consist of the following (in thousands):
|  | March 31, 2017 |  |  | December 31, 2016 |
Raw materials |  | $ | 5,664 |  |  | $ | 7,301 |
Work-in-process |  |  | 969 |  |  |  | 823 |
Finished goods |  |  | 38,538 |  |  |  | 38,469 |
|  |  | 45,171 |  |  |  | 46,593 |
Less reserve for excess and obsolete finished goods |  |  | (15,083 | ) |  |  | (16,500 | )
Inventories, net |  | $ | 30,088 |  |  | $ | 30,093 |
Property and Equipment, net Property and equipment, net consist of the following (in thousands except as indicated):
|  | Useful lives (in years) |  |  | March 31, 2017 |  |  | December 31, 2016 |
Surgical instruments |  |  | 4 |  |  | $ | 54,364 |  |  | $ | 53,095 |
Machinery and equipment |  |  | 7 |  |  |  | 5,492 |  |  |  | 5,435 |
Computer equipment |  |  | 3 |  |  |  | 3,512 |  |  |  | 3,511 |
Office furniture and equipment |  |  | 5 |  |  |  | 2,707 |  |  |  | 2,695 |
Leasehold improvements |  | various |  |  |  | 1,653 |  |  |  | 3,467 |
Construction in progress |  | n/a |  |  |  | - |  |  |  | 445 |
|  |  |  |  |  |  | 67,728 |  |  |  | 68,648 |
Less accumulated depreciation and amortization |  |  |  |  |  |  | (52,320 | ) |  |  | (53,572 | )
Property and equipment, net |  |  |  |  |  | $ | 15,408 |  |  | $ | 15,076 |
Total depreciation expense was $1.6 million and $2.3 million for the three months ended March 31, 2017 and 2016, respectively. At March 31, 2017 and December 31, 2016, assets recorded under capital leases of $2.1 million were included in the machinery and equipment balance. Amortization of assets under capital leases is included in depreciation expense. Intangible Assets, net Intangible assets, net consist of the following (in thousands except for useful lives):
|  | Remaining Avg. Useful lives (in years) |  |  | March 31, 2017 |  |  | December 31, 2016 |
Developed product technology |  |  | — |  |  | $ | 13,876 |  |  | $ | 13,876 |
Intellectual property |  |  | — |  |  |  | 1,004 |  |  |  | 1,004 |
License agreements |  |  | 2 |  |  |  | 5,265 |  |  |  | 5,265 |
Trademarks and trade names |  |  | — |  |  |  | 732 |  |  |  | 732 |
Customer-related |  |  | 8 |  |  |  | 7,458 |  |  |  | 7,458 |
Distribution network |  |  | 8 |  |  |  | 4,027 |  |  |  | 4,027 |
|  |  |  |  |  |  | 32,362 |  |  |  | 32,362 |
Less accumulated amortization |  |  |  |  |  |  | (26,885 | ) |  |  | (26,651 | )
Intangible assets, net |  |  |  |  |  | $ | 5,477 |  |  | $ | 5,711 |
Total amortization expense was $0.2 million and $0.3 million for the three months ended March 31, 2017 and 2016, respectively. Future amortization expense related to intangible assets as of March 31, 2017 is as follows (in thousands):
Year Ending December 31, |  |  |  |
Remainder of 2017 |  | $ | 702 |
2018 |  |  | 750 |
2019 |  |  | 688 |
2020 |  |  | 688 |
2021 |  |  | 688 |
Thereafter |  |  | 1,961 |
|  | $ | 5,477 |
Accrued Expenses Accrued expenses consist of the following (in thousands):
|  | March 31, 2017 |  |  | December 31, 2016 |
Commissions and sales milestones |  | $ | 4,156 |  |  | $ | 4,202 |
Payroll and payroll related |  |  | 2,419 |  |  |  | 2,384 |
Litigation settlements |  |  | 4,400 |  |  |  | 4,400 |
Globus related accruals |  |  | 767 |  |  |  | 3,830 |
Accrued professional fees |  |  | 2,308 |  |  |  | 3,093 |
Royalties |  |  | 1,350 |  |  |  | 1,347 |
Restructuring and severance accruals |  |  | 1,619 |  |  |  | 1,328 |
Accrued taxes |  |  | 419 |  |  |  | 404 |
Guaranteed collaboration compensation, current |  |  | 4,661 |  |  |  | 2,228 |
Accrued interest |  |  | 388 |  |  |  | 387 |
Other |  |  | 3,686 |  |  |  | 3,986 |
Total accrued expenses |  | $ | 26,173 |  |  | $ | 27,589 |

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