Restructuring and Related Activities [Abstract] Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Equity [Abstract] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] General Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Accounting Changes and Error Corrections [Abstract] Fiscal Period, Policy Fiscal Period, Policy [Policy Text Block] Accounting Standards Adopted in the Current Fiscal Year New Accounting Pronouncements, Policy [Policy Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock Options Employee Stock Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Risk-free interest rate (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Weighted average historical volatility (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Dividend yield (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected years until exercise (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted average fair value of options granted (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Statement of Financial Position [Abstract] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Segment Reporting [Abstract] Schedule of Franchisor Disclosure [Table] Schedule of Franchisor Disclosure [Table] Franchisor Disclosure [Axis] Franchisor Disclosure [Axis] Franchisor Disclosure [Domain] Franchisor Disclosure [Domain] Franchised Units Franchised Units [Member] Company Operated Entity Operated Units [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Applebee's Applebee's [Member] Applebee's [Member] IHOP IHOP [Member] IHOP Franchisor Disclosure [Line Items] Franchisor Disclosure [Line Items] Number of segments (segment) Number of Reportable Segments Number of restaurants (restaurant) Number of Restaurants Number of territories in which entity operates (territory) Number of Territories in which Entity Operates Number of Territories in which Entity Operates Number of countries in which entity operates (country) Number of Countries in which Entity Operates Earnings Per Share [Abstract] Computation of the Company’s basic and diluted net income per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Restricted Stock Restricted Stock [Member] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Restricted stock, beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Restricted stock, granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted stock, released (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Released in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Released in Period Restricted stock, forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Restricted stock, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted average grant date fair value, beginning balance (per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted average grant date fair value, granted (per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value, released (per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Released in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Released in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value, forfeited (per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted average grant date fair value, ending balance (per share) Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of segment reporting information by segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Accounting Policies New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Long-term debt, net Long-term Debt, Excluding Current Maturities Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Options, outstanding, beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options, granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Options, exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options, outstanding, end of period (in shares) Options, vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Options, exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted average exercise price, beginning of period (per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, granted (per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average exercise price, exercised (per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price, end of period (per share) Weighted average exercise price, vested and expected to vest (per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Weighted average exercise price, exercisable (per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Weighted average remaining contractual term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual term, vested and expected to vest (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Weighted average remaining contractual term, exercisable (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Options, outstanding, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options, vested and expected to vest, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Options, vested and expected to vest, exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Facility Consolidation Costs Restructuring and Related Activities Disclosure [Text Block] Segments Segment Reporting Disclosure [Text Block] Fair Value of non-current financial liabilities Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Employee Severance Employee Severance [Member] Facility Closing Facility Closing [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Employee termination costs Severance Costs Exit costs Restructuring and Related Cost, Expected Cost Remaining Accrued termination costs Restructuring Reserve Termination costs included in accrued employee compensation benefits Accrued Employee Benefits Termination costs included in other accrued expenses Other Accrued Liabilities Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to cash flows provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Non-cash interest expense Amortization of Debt Issuance Costs and Discounts Deferred income taxes Deferred Income Tax Expense (Benefit) Non-cash stock-based compensation expense Share-based Compensation Tax benefit from stock-based compensation Tax Benefit from Stock-based Compensation Reductions in the entity's income taxes that arise when compensation cost (from non-qualified stock-based compensation) recognized on the entity's tax return exceeds compensation cost from stock-based compensation recognized on the income statement. This element increases net cash provided by operating activities. Excess tax benefit from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Closure and impairment charges Impairment and Closure Charges Gross Noncash Impairment and Closure Charges Gross Noncash Loss (gain) on disposition of assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Other Other Cash and Noncash Changes in Operating Activities Transactions that result in no cash inflows or outflows in the period in which they occur, but affect net income and thus are removed when calculating net cash flow from operating activities using the indirect method combined with the net change during the reporting period in the value of other assets or liabilities used in operating activities that are not otherwise defined in the taxonomy. This element is used when there is not a more specific and appropriate element. Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Receivables Current income tax receivables and payables Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Gift card receivables and payables Increase (Decrease) in Gift Card Receivables and Payables, Net Increase (decrease) in gift card liability, gift card receivable, prepaid gift card costs and gift-card related accounts payable, net. Other current assets Increase (Decrease) in Other Current Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued employee compensation and benefits Increase (Decrease) in Employee Related Liabilities Accrued interest payable Increase (Decrease) in Interest Payable, Net Other current liabilities Increase (Decrease) in Other Accrued Liabilities Cash flows provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to property and equipment Payments to Acquire Property, Plant, and Equipment Principal receipts from notes, equipment contracts and other long-term receivables Proceeds from Notes and Equipment Contracts receivable The cash inflow from the principal repayments on notes and equipment contracts receivable. Other Payments for (Proceeds from) Other Investing Activities Cash flows provided by investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Principal payments on capital lease and financing obligations Repayments of Long-term Capital Lease Obligations Repurchase of common stock Payments for Repurchase of Common Stock Dividends paid on common stock Payments of Dividends Tax payments for restricted stock upon vesting Payments for Repurchase of Other Equity Proceeds from stock options exercised Proceeds from Stock Options Exercised Excess tax benefit from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Change in restricted cash Increase (Decrease) in Restricted Cash Other Proceeds from (Payments for) Other Financing Activities Cash flows used in financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Supplemental disclosures: Supplemental Cash Flow Information [Abstract] Interest paid in cash Interest Paid, Net Income taxes paid in cash Income Taxes Paid Components of the Company’s stock-based compensation expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of stock option valuation assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of stock option activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of restricted stock unit activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Property Lease Guarantee Property Lease Guarantee [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Potential liability for guaranteed leases Guarantor Obligations, Maximum Exposure, Undiscounted Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Receivables, net Accounts, Notes, Loans and Financing Receivable, Net, Current Restricted cash Restricted Cash and Cash Equivalents, Current Prepaid gift card costs Prepaid Gift Cards Carrying amount as of the balance sheet date of payments made in advance related to gift card program which are expected to be relieved as gift cards are redeemed within one year. Prepaid income taxes Prepaid Taxes Other current assets Other Assets, Current Total current assets Assets, Current Long-term receivables, net Accounts, Notes, Loans and Financing Receivable, Net, Noncurrent Property and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Other intangible assets, net Intangible Assets, Net (Excluding Goodwill) Deferred rent receivable Deferred Rent Receivables, Net, Noncurrent Other non-current assets, net Other Assets, Noncurrent Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Gift card liability Gift Card Liability, Current Accrued employee compensation and benefits Employee-related Liabilities, Current Dividends payable Dividends Payable, Current Current maturities of capital lease and financing obligations Capital Lease Obligations, Current Income taxes payable Taxes Payable, Current Accrued advertising Accrued Advertising Accrued interest payable Interest Payable, Current Other accrued expenses Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Capital lease obligations, less current maturities Capital Lease Obligations, Noncurrent Financing obligations, less current maturities Sale Leaseback Financing Obligations The sale leaseback financing obligations due after one year from the balance sheet date or beyond the operating cycle, if longer, accounted for under the financing method. Deferred income taxes, net Deferred Tax Liabilities, Net, Noncurrent Deferred rent payable Accrued Rent, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.01 par value, shares: 40,000,000 authorized; March 31, 2016 - 25,166,732 issued, 18,409,845 outstanding; December 31, 2015 - 25,186,048 issued, 18,535,027 outstanding Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost; shares: March 31, 2016 - 6,756,887; December 31, 2015 - 6,651,021 Treasury Stock, Value Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity LTIP Long Term Incentive Plan [Member] Long Term Incentive Plan [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Total compensation cost not yet recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Total compensation cost not yet recognized, period for recognition (in years) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Award vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Multiplier for target award based on total shareholder return on common stock (percent) Share Based Compensation, Multiplier for Target Award Based on Total Shareholder Return on Common Stock Share Based Compensation, Multiplier for Target Award Based on Total Shareholder Return on Common Stock Share-based compensation expense Allocated Share-based Compensation Expense Net Income per Share Earnings Per Share [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate, Non-Segment Corporate, Non-Segment [Member] Statement, Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Franchise Operations Franchise Operations [Member] Franchise Operations [Member] Rental Operations Rental Operations [Member] Rental Operations [Member] Company Restaurants Company Restaurants [Member] Company Restaurants [Member] Financing Operations Financing Operations [Member] Financing Operations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Franchise revenues Franchise Revenue Rental revenues Rental Income Rental income includes revenue from operating leases and interest income from direct financing leases. Company restaurants Food and Beverage Revenue Financing revenues Financial Services Revenue Total revenues Revenues Interest expense Interest Expense Income (loss) before income tax provision: Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income Statement [Abstract] Operating Income (Loss) [Abstract] Revenues: Revenues [Abstract] Franchise and restaurant revenues Franchise and Restaurant Revenues Franchise and Restaurant Revenues Total revenues Cost of revenues: Cost of Revenue [Abstract] Franchise and restaurant expenses Franchise and Restaurant Expenses Franchise and Restaurant Expenses Rental expenses Rental Expenses Rental expenses are costs of prime operating leases and interest expense on prime capital leases on franchisee-operated restaurants. Financing expenses Financing Expenses Represents the charge against earnings during the period primarily related to the cost of restaurant equipment. Total cost of revenues Cost of Revenue Gross profit Gross Profit General and administrative expenses General and Administrative Expense Interest expense Interest Expense Debt and Debt Discount Represents the portion of interest incurred in the period on debt arrangements and amortization of debt discount that was charged against earnings. Amortization of intangible assets Amortization of Intangible Assets Closure and impairment charges, net Restructuring, Settlement and Impairment Provisions Loss (gain) on disposition of assets Gain (Loss) on Disposition of Assets Income before income tax provision Income tax provision Income Tax Expense (Benefit) Net income Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net income available to common stockholders: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Less: Net income allocated to unvested participating restricted stock Net Income (Loss) Allocated to Unvested Participating Restricted Stock The amount of net income (loss) which is allocated to unvested participating restricted stock. Net income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Net income available to common stockholders per share: Basic (USD per share) Earnings Per Share, Basic Diluted (USD per share) Earnings Per Share, Diluted Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Dividends declared per common share (USD per share) Common Stock, Dividends, Per Share, Declared Dividends paid per common share (USD per share) Common Stock, Dividends, Per Share, Cash Paid Class of Treasury Stock [Table] Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] October 2014 Share Repurchase Program October Two Thousand Fourteen Share Repurchase Program [Member] October Two Thousand Fourteen Share Repurchase Program [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Payments of dividends Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Stock repurchased during period, shares Stock Repurchased During Period, Shares Stock repurchased during period, value Stock Repurchased During Period, Value Cumulative amount of shares repurchased Cumulative Amount of Shares Repurchased Cumulative Amount of Shares Repurchased Cumulative payments for repurchase of common stock Cumulative Payments for Repurchase of Common Stock Cumulative Payments for Repurchase of Common Stock Remaining authorized stock repurchases Stock Repurchase Program, Remaining Authorized Repurchase Amount Treasury stock reissued (shares) Stock Issued During Period, Shares, Treasury Stock Reissued Treasury stock reissued Stock Issued During Period, Value, Treasury Stock Reissued Stock-based compensation, equity classified awards Allocated Share-based Compensation Expense, Equity Classified Awards Allocated Share-based Compensation Expense, Equity Classified Awards Stock-based compensation, liability classified awards Allocated Share-based Compensation Expense, Liability Classified Awards Allocated Share-based Compensation Expense, Liability Classified Awards Total pre-tax stock-based compensation expense Book income tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Total stock-based compensation expense, net of tax Allocated Share-based Compensation Expense, Net of Tax Less: Net income allocated to unvested participating restricted stock Effect of unvested participating restricted stock in two-class calculation Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units Net income available to common stockholders - diluted Net Income (Loss) Available to Common Stockholders, Diluted Weighted average outstanding shares of common stock - basic (in shares) Dilutive effect of stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average outstanding shares of common stock - diluted (in shares) Net income per common share - basic (USD per share) Net income per common share -diluted (USD per share) Effective income tax rate (percent) Effective Income Tax Rate Reconciliation, Percent Gross unrecognized tax benefit Unrecognized Tax Benefits Expected change in unrecognized tax benefits Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Accrued interest on income taxes Unrecognized Tax Benefits, Interest on Income Taxes Accrued Accrued penalties on income taxes, less than Unrecognized Tax Benefits, Income Tax Penalties Accrued Basis of Presentation Basis of Accounting [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Accrued termination costs, beginning Charges Payments Payments for Restructuring Accrued termination costs, ending