Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Significant Changes in Our Contract Liabilities (Detail)

v3.19.1
Revenue Recognition - Significant Changes in Our Contract Liabilities (Detail)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
USD ($)
Change in Contract with Customer, Liability [Abstract]  
Short Term, Balance, beginning of period $ 11,537
Short Term, Revenue recognized during the period that was included in the beginning balance of contract liabilities (3,259)
Short Term, Additional amounts recognized during the period 5,524
Short Term, Revenue recognized during the period that was recorded during the period (2,529)
Short Term, Transfers 308
Short Term, Balance, end of period 11,581
Short Term, Amount refundable at beginning of period 11,410
Short Term, Amount refundable at end of period 11,491
Long-Term, Balance, beginning of period 1,379
Long-Term, Revenue recognized during the period that was included in the beginning balance of contract liabilities 0
Long-Term, Additional amounts recognized during the period 347
Long-Term, Revenue recognized during the period that was recorded during the period 0
Long-Term, Transfers (308)
Long-Term, Balance, end of period 1,418
Long-Term, Amount refundable at beginning of period 1,379
Long-Term, Amount refundable at end of period $ 1,418