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Leases - Supplemental unaudited consolidated balance sheet information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Jan. 01, 2019
Supplemental unaudited consolidated balance sheet information |  |
Operating lease right-of-use assets | $ 8,768 | $ 9,200
Operating lease liabilities noncurrent | 7,852 |
Operating lease liabilities | $ 10,927 | $ 11,000
Weighted average remaining lease term | 5 years 9 months 18 days |
Weighted-average discount rate | 4.90% |
Supplemental unaudited interim consolidated cash flow information |  |
Operating cash flows from operating leases | $ 323 |
ROU assets obtained in exchange for new operating lease liabilities | 387 |
Other Accrued Expenses |  |
Supplemental unaudited consolidated balance sheet information |  |
Operating lease liabilities current | 3,075 |
Long Term Lease Liabilities |  |
Supplemental unaudited consolidated balance sheet information |  |
Operating lease liabilities noncurrent | $ 7,852 |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of cash outflow from operating lease to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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