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Inventory
12 Months Ended
Dec. 31, 2012
Inventory Disclosure [Abstract]  
Inventory
Inventory

Inventory at December 31, 2012 and December 31, 2011, of $4.4 million and $3.4 million respectively, consists of spare parts and small equipment held for use in the ordinary course of business.

Non current inventory at December 31, 2012 totaled $0.9 million and consisted primarily of spare engines components kept on hand for the Company's dredging assets.