Fair Value Measurements (Narrative) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2014 Treehouse	Aug. 01, 2014 Treehouse	Sep. 30, 2014 Treehouse Other long-term liability Fair Value, Measurements, Recurring Level 3:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration (up to 2 million)						$ 2,000,000.0
Long-term contingent consideration	$ 1,009,000	[1]	$ 0	[1]	$ 1,009,000	$ 1,259,000	$ 1,000,000

[1] Long-term contingent consideration represents the fair value of the potential earn-out payments related to the acquisition of Treehouse based on the terms of the asset purchase agreement.