Legal Proceedings	12 Months Ended
Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Legal Proceedings The Company is subject to litigation in the normal course of its business. The outcomes of legal proceedings and claims brought against it and other loss contingencies are subject to significant uncertainty. The Company accrues a charge against income when its management determines that it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. In addition, the Company accrues for the authoritative judgments or assertions made against it by government agencies at the time of their rendering regardless of its intent to appeal. In addition, the Company is from time-to-time party to litigation, administrative proceedings and union grievances that arise in the normal course of business, and occasionally pays non-material amounts to resolve claims or alleged violations of regulatory requirements. There are no "normal course" matters that separately or in the aggregate, would, in the opinion of management, have a material adverse effect on its operation, financial condition or cash flow. In determining the appropriate accounting for loss contingencies, the Company considers the likelihood of loss or impairment of an asset or the incurrence of a liability, as well as its ability to reasonably estimate the amount of potential loss. The Company regularly evaluates current information available to determine whether an accrual should be established or adjusted. Estimating the probability that a loss will occur and estimating the amount of a potential loss or a range of potential loss involves significant estimation and judgment. Holten Settlement In March 2010, John V. Holten, a former indirect controlling shareholder of the Company, filed a lawsuit against the Company in the United States District Court, District of Connecticut. Mr. Holten was terminated as the Company's chairman in October 2009. The lawsuit alleged breach of his employment agreement and claimed that the agreement entitled Mr. Holten to payments worth more than $3.8 million. The Company filed an answer and counterclaim to Mr. Holten's lawsuit in 2010. In March 2016, the Company and Mr. Holten settled all claims in connection with the original lawsuits ("Holten Settlement"). Per the settlement, the Company paid Mr. Holten $3.4 million of which $1.9 million was recovered by the Company through the Company's directors and officers liability insurance policies. The Company recognized an expense, net of insurance recoveries, related to the Holten Settlement of $1.5 million for the year ended December 31, 2016. Settlement with Former Central Stockholders In September 2016, the Company and the former stockholders of KCPC Holdings, Inc., which was the ultimate parent of Central Parking Corporation (collectively, "Central") agreed-upon non-binding terms to settle all outstanding matters between the parties relating to the Central Merger ("Settlement Terms") and on December 15, 2016 the Company and Central's former stockholders executed a settlement agreement ("Settlement Agreement") to settle all outstanding matters between the parties relating to the Central Merger (including the Company's claims as described above). Pursuant to the Settlement Agreement, the Company paid Central's former stockholders $2.5 million in aggregate. As a result of the Settlement Terms, the Company recorded $0.8 million ($0.5 million, net of tax) in General and administrative expenses within the Consolidated Statements of Income in 2016. Additionally and pursuant to the Settlement Agreement, the parties fully released one another for any future claims.

Legal Proceedings

The Company is subject to litigation in the normal course of its business. The outcomes of legal proceedings and claims brought against it and other loss contingencies are subject to significant uncertainty. The Company accrues a charge against income when its management determines that it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. In addition, the Company accrues for the authoritative judgments or assertions made against it by government agencies at the time of their rendering regardless of its intent to appeal. In addition, the Company is from time-to-time party to litigation, administrative proceedings and union grievances that arise in the normal course of business, and occasionally pays non-material amounts to resolve claims or alleged violations of regulatory requirements. There are no "normal course" matters that separately or in the aggregate, would, in the opinion of management, have a material adverse effect on its operation, financial condition or cash flow.

In determining the appropriate accounting for loss contingencies, the Company considers the likelihood of loss or impairment of an asset or the incurrence of a liability, as well as its ability to reasonably estimate the amount of potential loss. The Company regularly evaluates current information available to determine whether an accrual should be established or adjusted. Estimating the probability that a loss will occur and estimating the amount of a potential loss or a range of potential loss involves significant estimation and judgment.

Holten Settlement

In March 2010, John V. Holten, a former indirect controlling shareholder of the Company, filed a lawsuit against the Company in the United States District Court, District of Connecticut. Mr. Holten was terminated as the Company's chairman in October 2009. The lawsuit alleged breach of his employment agreement and claimed that the agreement entitled Mr. Holten to payments worth more than $3.8 million. The Company filed an answer and counterclaim to Mr. Holten's lawsuit in 2010.

In March 2016, the Company and Mr. Holten settled all claims in connection with the original lawsuits ("Holten Settlement"). Per the settlement, the Company paid Mr. Holten $3.4 million of which $1.9 million was recovered by the Company through the Company's directors and officers liability insurance policies. The Company recognized an expense, net of insurance recoveries, related to the Holten Settlement of $1.5 million for the year ended December 31, 2016.

Settlement with Former Central Stockholders

In September 2016, the Company and the former stockholders of KCPC Holdings, Inc., which was the ultimate parent of Central Parking Corporation (collectively, "Central") agreed-upon non-binding terms to settle all outstanding matters between the parties relating to the Central Merger ("Settlement Terms") and on December 15, 2016 the Company and Central's former stockholders executed a settlement agreement ("Settlement Agreement") to settle all outstanding matters between the parties relating to the Central Merger (including the Company's claims as described above). Pursuant to the Settlement Agreement, the Company paid Central's former stockholders $2.5 million in aggregate. As a result of the Settlement Terms, the Company recorded $0.8 million ($0.5 million, net of tax) in General and administrative expenses within the Consolidated Statements of Income in 2016. Additionally and pursuant to the Settlement Agreement, the parties fully released one another for any future claims.