XML 26 R17.htm IDEA: XBRL DOCUMENT v2.4.0.6
Retirement Plan
12 Months Ended
Dec. 31, 2011
Retirement Plan: [Abstract]  
Retirement Plan:
11. Retirement plan:

The Company sponsors a defined contribution retirement plan under Section 401(k) of the Internal Revenue Code. The plan covers all employees who meet certain eligibility and participation requirements. Participants may contribute up to 90% of their eligible earnings, as limited by law. The Company makes a matching contribution equal to 100% on the first 5% of participant contributions to the plan. The Company made contributions of approximately $0.1 million in 2011, 2010 and 2009, respectively.