Cash and Cash Equivalents (Tables)

12 Months Ended

Dec. 31, 2012

Cash and cash equivalents [Abstract]

Schedule of cash and cash equivalents

	December 31,  2012		December 31,  2011
Cash on hand and at banks	$	18,180	$	20,704
Short term deposits and highly liquid funds		13,952		27,374
Total cash and cash equivalents	$	32,132	$	48,078