Accounting For Stock-Based Compensation (Narrative) (Details)		1 Months Ended	3 Months Ended		6 Months Ended
	May 20, 2016 shares	May 31, 2016 shares	Jun. 30, 2016 USD ($) stock-based_complensation_plan shares	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) stock-based_complensation_plan $ / shares shares	Jun. 30, 2015 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans | stock-based_complensation_plan			4		4
Additional shares of common stock reserved for stock based benefits (in shares) | shares		350,000
Weighted Average Grant Date Fair Value, Granted (in dollars per share) | $ / shares					$ 0.00
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options					$ 0	$ 0
Fair value of shares vested					274,000
Equity based compensation expense			$ 409,000	$ 159,000	$ 552,000	276,000
Weighted-Average Exercise Price Per Share, Granted (in dollars per share) | $ / shares					$ 15.19
Unrecognized compensation cost related to non-vested equity based compensation			$ 1,200,000		$ 1,200,000
Unrecognized equity based compensation weighted average period, years					2 years 1 month 13 days
Dividend yield (as a percent)					0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rates (as a percent)					1.24%
Expected life in years					5 years 1 month 6 days
Expected volatility (as a percent)					42.22%
Weighted average fair value on grant date (in dollars per share) | $ / shares					$ 3.68
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rates (as a percent)					1.85%
Expected life in years					7 years 6 months
Expected volatility (as a percent)					46.67%
Weighted average fair value on grant date (in dollars per share) | $ / shares					$ 8.71
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for stock based benefits (in shares) | shares			1,036,157		1,036,157
Vesting period, years					4 years
Expiration of stock options from date of grant					7 years
Number of shares available for future issuance (in shares) | shares			475,439		475,439
Weighted average remaining contractual term, years					5 years 11 days
Aggregate intrinsic value for all options outstanding			$ 3,700,000		$ 3,700,000
Weighted average remaining contractual term for exercisable options, years					4 years 6 months 5 days
Aggregate intrinsic value of exercisable options			1,300,000		$ 1,300,000
Aggregate intrinsic value of stock options exercised					375,000
Proceeds from exercise of stock options					258,000	294,000
Tax benefit realized from exercise of stock options					0	0
Equity based compensation expense			226,000	74,000	$ 321,000	148,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years					4 years
Aggregate intrinsic value for all options outstanding			715,000		$ 715,000
Fair value of shares vested					$ 190,000
Restricted stock units to common stock ratio, shares entitled (in shares) | shares					1
Equity based compensation expense			$ 31,000	28,000	$ 63,000	56,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future issuance (in shares) | shares			95,757		95,757
Maximum contribution per plan year					$ 6,500
Employees can purchase stock at the percentage rate of the lower of the market price on the first or last day of the offering period					85.00%
Equity based compensation expense			$ 16,000	$ 16,000	$ 32,000	31,000
Employee Stock Purchase Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deduction for employee stock purchase plan percentage					1.00%
Employee Stock Purchase Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deduction for employee stock purchase plan percentage					10.00%
Stock Grant Plan for Non Employee Directors (in shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Shares Granted For Non-Employee Directors Upon Re-Election | shares					1,000
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | shares				4,000
Equity based compensation expense				$ 41,000		$ 41,000
Share-based compensation exercise price (in dollars per share) | $ / shares				$ 10.36		$ 10.36
New Non-Employee Director Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for stock based benefits (in shares) | shares	100,000
Number of shares available for future issuance (in shares) | shares			76,000		76,000
Number of shares granted for non-employee directors upon re-election (in shares) | shares	2,000
Number of options granted for non-employee directors upon re-election (in shares) | shares	4,000		16,000
Stock Granted, Value, Share-based Compensation, Gross			$ 136,000
Weighted Average Grant Date Fair Value, Granted (in dollars per share) | $ / shares					$ 16.97
Weighted average remaining contractual term, years	10 years
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | shares			8,000
Equity based compensation expense			$ 136,000		$ 136,000
Share-based compensation using Black Scholes model			$ 139,000
Weighted-Average Exercise Price Per Share, Granted (in dollars per share) | $ / shares					$ 8.71