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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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