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Balance Sheet Components | 9 Months Ended
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Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Balance Sheet Components | Balance Sheet Components Balance sheet details as of September 30, 2018 and December 31, 2017 are presented in the tables below:
| September 30, 2018 |  | December 31, 2017
| (In thousands)
Inventories: |  |  |
Raw materials | $ | 32,529 |  |  | $ | 31,275 |
Work in process | 9,929 |  |  | 8,718 |
Finished goods | 56,773 |  |  | 56,144 |
Total inventories | $ | 99,231 |  |  | $ | 96,137 |
Property and equipment: |  |  |
Equipment | $ | 77,837 |  |  | $ | 69,550 |
Furniture and fixtures | 7,961 |  |  | 6,534 |
Leasehold improvements | 16,209 |  |  | 10,976 |
Software | 39,611 |  |  | 37,168 |
Construction in progress | 11,428 |  |  | 9,813 |
Property and equipment, gross | 153,046 |  |  | 134,041 |
Accumulated depreciation and amortization | (102,562 | ) |  | (91,446 | )
Total property and equipment, net | $ | 50,484 |  |  | $ | 42,595 |
Other long term assets: |  |  |
Capitalized software, net | $ | 52,088 |  |  | $ | 38,599 |
Unbilled receivables | 15,573 |  |  | 9,475 |
Other assets | 1,287 |  |  | 1,242 |
Total other long term assets, net | $ | 68,948 |  |  | $ | 49,316 |
Accrued liabilities: |  |  |
Advance payments from customers | $ | 4,850 |  |  | $ | 7,779 |
Rebates and lease buyouts | 8,273 |  |  | 5,428 |
Group purchasing organization fees | 4,023 |  |  | 3,449 |
Taxes payable | 5,770 |  |  | 9,183 |
Other accrued liabilities | 12,861 |  |  | 9,854 |
Total accrued liabilities | $ | 35,777 |  |  | $ | 35,693 |
Depreciation expense of property and equipment was $3.7 million and $3.8 million for the three months ended September 30, 2018 and 2017, respectively. Depreciation expense of property and equipment was $11.0 million and $12.1 million for the nine months ended September 30, 2018 and 2017, respectively. The following table summarizes the changes in accumulated balances of other comprehensive income (loss) for the three and nine months ended September 30, 2018 and 2017:
| Three months ended September 30,
| 2018 |  | 2017
| Foreign currency translation adjustments |  | Unrealized gain (loss) on interest rate swap hedges |  | Total |  | Foreign currency translation adjustments |  | Unrealized gain (loss) on interest rate swap hedges |  | Total
| (In thousands)
Beginning balance | $ | (8,896 | ) |  | $ | 953 |  |  | $ | (7,943 | ) |  | $ | (8,765 | ) |  | $ | 1,274 |  |  | $ | (7,491 | )
Other comprehensive income (loss) before reclassifications | (907 | ) |  | 90 |  |  | (817 | ) |  | 1,389 |  |  | 35 |  |  | 1,424 |
Amounts reclassified from other comprehensive income (loss), net of tax | — |  |  | (324 | ) |  | (324 | ) |  | — |  |  | (109 | ) |  | (109 | )
Net current-period other comprehensive income (loss), net of tax | (907 | ) |  | (234 | ) |  | (1,141 | ) |  | 1,389 |  |  | (74 | ) |  | 1,315 |
Ending balance | $ | (9,803 | ) |  | $ | 719 |  |  | $ | (9,084 | ) |  | $ | (7,376 | ) |  | $ | 1,200 |  |  | $ | (6,176 | )
| Nine months ended September 30,
| 2018 |  | 2017
| Foreign currency translation adjustments |  | Unrealized gain (loss) on interest rate swap hedges |  | Total |  | Foreign currency translation adjustments |  | Unrealized gain (loss) on interest rate swap hedges |  | Total
| (In thousands)
Beginning balance | $ | (6,954 | ) |  | $ | 841 |  |  | $ | (6,113 | ) |  | $ | (10,764 | ) |  | $ | 1,245 |  |  | $ | (9,519 | )
Other comprehensive income (loss) before reclassifications | (2,849 | ) |  | 686 |  |  | (2,163 | ) |  | 3,388 |  |  | 111 |  |  | 3,499 |
Amounts reclassified from other comprehensive income (loss), net of tax | — |  |  | (808 | ) |  | (808 | ) |  | — |  |  | (156 | ) |  | (156 | )
Net current-period other comprehensive income (loss), net of tax | (2,849 | ) |  | (122 | ) |  | (2,971 | ) |  | 3,388 |  |  | (45 | ) |  | 3,343 |
Ending balance | $ | (9,803 | ) |  | $ | 719 |  |  | $ | (9,084 | ) |  | $ | (7,376 | ) |  | $ | 1,200 |  |  | $ | (6,176 | )

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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