Prepaid charter revenue (Tables)

6 Months Ended

Jun. 30, 2013

Finite-Lived Intangible Assets [Abstract]

Prepaid Charter Revenue Analysis [Table Text Block]

Description		June 30, 2013		December 31, 2012
Prepaid charter revenue	$	28,586	$	29,796
Deferred asset from varying charter rates		161		122
Total	$	28,747	$	29,918

Prepaid Charter Revenue Amortization [Table Text Block]

Period	Amount
Year 1	$16,431
Year 2	$9,418
Year 3	$2,737