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Income Taxes - Provision, Reconciliation and Deferred Taxes (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 21, 2019 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
United States and foreign loss before income taxes: |  |  |  |  |  |  |  |  |  |  |  |
United States |  |  |  |  |  |  |  |  |  | $ (50,339,000) | $ (14,776,000) | $ 12,543,000
Foreign |  |  |  |  |  |  |  |  |  | 303,000 | 2,408,000 | (12,542,000)
(Loss) income before taxes |  |  |  |  |  |  |  |  |  | (50,036,000) | (12,368,000) | 1,000
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  |  | 237,000 |  | 235,000
State |  |  |  |  |  |  |  |  |  | 122,000 | 274,000 | 93,000
Foreign |  |  |  |  |  |  |  |  |  | 487,000 | 309,000 |
Total current income tax provision |  |  |  |  |  |  |  |  |  | 846,000 | 583,000 | 328,000
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  |  | (58,368,000) |  | (235,000)
State |  |  |  |  |  |  |  |  |  | (7,938,000) |  |
Total deferred income tax provision |  |  |  |  |  |  |  |  |  | (66,306,000) |  | (235,000)
Income tax (benefit) provision |  | $ (65,841,000) | $ 187,000 | $ 72,000 | $ 122,000 | $ 530,000 | $ 37,000 | $ 11,000 | $ 5,000 | (65,460,000) | 583,000 | 93,000
Reconciliations of the U.S. federal statutory tax rate to the combined effective tax rate |  |  |  |  |  |  |  |  |  |  |  |
Statutory rate of tax benefit |  |  |  |  |  |  |  |  |  | (10,508,000) | (2,597,000) |
State income taxes, net of federal benefit |  |  |  |  |  |  |  |  |  | (2,418,000) | (1,518,000) | (17,000)
Permanent and other items |  |  |  |  |  |  |  |  |  | 4,371,000 | 1,349,000 | 279,000
Stock-based compensation |  |  |  |  |  |  |  |  |  | (5,006,000) | (6,007,000) | (5,478,000)
Research credits |  |  |  |  |  |  |  |  |  | (3,594,000) | (2,556,000) | (2,215,000)
Uncertain tax positions |  |  |  |  |  |  |  |  |  | 1,780,000 | 6,143,000 | 1,108,000
Change in tax rate |  |  |  |  |  |  |  |  |  | 419,000 | (250,000) | 1,013,000
Tax Cuts and Jobs Act |  |  |  |  |  |  |  |  |  |  |  | 25,216,000
ASU 2016-09 Implementation & ASC 842 Adoption in 2019 |  |  |  |  |  |  |  |  |  | (104,000) |  |
Valuation allowance |  |  |  |  |  |  |  |  |  | (50,400,000) | 6,019,000 | (19,813,000)
Income tax (benefit) provision |  | (65,841,000) | $ 187,000 | $ 72,000 | $ 122,000 | 530,000 | $ 37,000 | $ 11,000 | $ 5,000 | (65,460,000) | 583,000 | $ 93,000
Components of deferred tax assets |  |  |  |  |  |  |  |  |  |  |  |
Net operating loss carryforwards |  | 69,571,000 |  |  |  | 40,041,000 |  |  |  | 69,571,000 | 40,041,000 |
Tax credits |  | 11,590,000 |  |  |  | 7,754,000 |  |  |  | 11,590,000 | 7,754,000 |
Depreciation and amortization |  |  |  |  |  | 9,356,000 |  |  |  |  | 9,356,000 |
Stock-based compensation |  | 19,268,000 |  |  |  | 9,838,000 |  |  |  | 19,268,000 | 9,838,000 |
Reserves and accruals |  | 7,996,000 |  |  |  | 5,030,000 |  |  |  | 7,996,000 | 5,030,000 |
Lease liability |  | 18,422,000 |  |  |  |  |  |  |  | 18,422,000 |  |
Other, net |  | 147,000 |  |  |  |  |  |  |  | 147,000 |  |
Other, net |  |  |  |  |  | (65,000) |  |  |  |  | (65,000) |
Total deferred tax assets |  | 126,994,000 |  |  |  | 71,954,000 |  |  |  | 126,994,000 | 71,954,000 |
Depreciation and amortization |  | (81,174,000) |  |  |  |  |  |  |  | (81,174,000) |  |
ROU Lease Asset |  | (17,333,000) |  |  |  |  |  |  |  | (17,333,000) |  |
Inventory |  | (6,030,000) |  |  |  |  |  |  |  | (6,030,000) |  |
Total deferred tax liabilities |  | (104,537,000) |  |  |  |  |  |  |  | (104,537,000) |  |
Valuation allowance |  | (32,089,000) |  |  |  | $ (71,954,000) |  |  |  | (32,089,000) | $ (71,954,000) |
Net deferred tax liability |  | $ (9,632,000) |  |  |  |  |  |  |  | (9,632,000) |  |
Net decrease in valuation allowance |  |  |  |  |  |  |  |  |  | $ (39,900,000) |  |
Avedro |  |  |  |  |  |  |  |  |  |  |  |
Components of deferred tax assets |  |  |  |  |  |  |  |  |  |  |  |
Total deferred tax liabilities | $ (75,900,000) |  |  |  |  |  |  |  |  |  |  |
Valuation allowance | (10,700,000) |  |  |  |  |  |  |  |  |  |  |
Net decrease in valuation allowance | $ (66,300,000) |  |  |  |  |  |  |  |  |  |  |

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