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Significant Accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Disaggregation of revenue |
| Twelve Months Ended December 31, 2018
Time charters | $ | 397,499
Voyage charters |  | 253,812
Pool revenues |  | 250
| $ | 651,561
Reconciliation of cash and cash equivalents and restricted cash |
|  | December 31,
|  | 2016 | 2017 | 2018
Cash and cash equivalents | $ | 181,758 | 257,911 | 204,921
Restricted cash, current (Note 8) |  | 5,121 | 7,169 | 6,435
Restricted cash, non-current (Note 8) |  | 8,883 | 8,420 | 2,521
Cash and cash equivalents and restricted cash at end of period shown in the statement of cash flows | $ | 195,762 | 273,500 | 213,877
Balance Sheet Location |
Impact of the adoption of ASC 606 |
| As of December 31, 2018
| As Reported |  | Balances without Adoption of ASC 606 |  | Effect of Change
Assets |  |  |  |  |  |  |  |
Trade accounts receivable | $ | 38,402 |  | $ | 40,792 |  | $ | (2,390)
Other current assets |  | 7,046 |  |  | 4,992 |  |  | 2,054
Liabilities |  |  |  |  |  |  |  |
Deferred revenue |  | 10,855 |  |  | 9,043 |  |  | (1,812)
Accrued liabilities |  | 16,854 |  |  | 16,867 |  |  | 13
Income Statement Location |
Impact of the adoption of ASC 606 |
| For the twelve months ended December 31, 2018
| As Reported |  |  | Balances without Adoption of ASC 606 |  | Effect of Change
Voyage revenues | $ | 651,561 |  | $ | 652,228 |  | $ | (667)
Voyage expenses |  | 121,596 |  |  | 122,037 |  |  | 441
Charter-in hire expenses |  | 92,896 |  |  | 93,508 |  |  | 612
Net income/(loss) |  | 58,397 |  |  | 58,011 |  |  | 386
Earnings/(Loss) per share, basic | $ | 0.76 |  | $ | 0.75 |  | $ | 0.01
Earnings/(Loss) per share, diluted | $ | 0.76 |  | $ | 0.75 |  | $ | 0.00
Cumulative effect of changes |
Impact of the adoption of ASC 606 |
| December 31, 2017 |  | Effect of Adoption of ASC 606 | January 1, 2018
Assets |  |  |  |  |  |  |
Trade accounts receivable | $ | 18,521 |  | $ | (2,383) | $ | 16,138
Other current assets |  | 5,157 |  |  | 1,263 |  | 6,420
Liabilities |  |  |  |  |  |
Deferred revenue |  | 7,229 |  |  | (1,137) |  | 8,366
Accrued liabilities |  | 10,521 |  |  | (2) |  | 10,523
Stockholders' Equity |  |  |  |  |  |  |
Accumulated deficit |  | (1,036,303) |  |  | (2,259) |  | (1,038,562)

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