Defined Contribution and 401(k) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Defined Contribution and 401(k) (Textuals) [Abstract]
Total contribution by employees	$ 0.4	$ 0.2	$ 0.8	$ 0.4
Total plan expenses	$ 0.3	$ 0.2	$ 0.6	$ 0.4
Retirement Savings Plan Under Section 401 (k) [Member]
Additional Defined Contribution And 401 k
Percentage of maximum limit for employees to contribute their cash compensation			100.00%
Defined Benefit Plans, General Information			The Company adopted a Safe Harbor Tiered Match and is required to make matching contributions equal to 100% of the employee’s contribution up to 3% of the employee’s compensation plus matching contributions equal to 50% of the employee’s contribution up to an additional 2% of the employee’s compensation.

- Definition

Description of the terms and benefits provided by the employer's defined contribution plans. A defined contribution plan provides benefits in return for services rendered, provides an individual account for each participant, and has terms that specify how contributions to the individual's account are to be determined rather than the amount of benefits the individual is to receive. Under a defined contribution pension plan, the benefits a participant will receive depend solely on the amount contributed to the participant's account, the returns earned on investments of those contributions, and forfeitures of other participants' benefits that may be allocated to such participant's account. A description of the plan(s) including employee groups covered, the basis for determining contributions, and the nature and effects of significant matters affecting comparability of information for all periods presented.

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