Our commitments include obligations under operating leases, which expire through 2021. We have lease commitments for office space in Bellevue, Washington; Taipei, Taiwan; and Trowbridge, UK. We also lease office in Boston, Massachusetts.

As of December 31, 2018 we had approximately $263,000 held as collateral on a letter of credit with JPMorgan Chase Bank, N.A. (the “Bank”) under the terms of our headquarters facility lease, which was recorded as restricted cash, long-term. Additionally, we had approximately $263,000 held as collateral at the Bank supporting our credit card line, which was been recorded as restricted cash.

2019	$	1,195
2020		623
2021		60
Total	$	1,878

From time to time, we are subject to legal proceedings, claims, and litigation arising in the ordinary course of business including tax assessments. We defend ourselves vigorously against any such claims. When (i) it is probable that an asset has been impaired, or a liability has been incurred and (ii) the amount of the loss can be reasonably estimated, we record the estimated loss. We provide disclosure in the notes to the consolidated financial statements for loss contingencies that do not meet both of these conditions if there is a reasonable possibility that a loss may have been incurred that would be material to the financial statements. Significant judgment is required to determine the probability that a liability has been incurred and whether such liability is reasonably estimable. We base accruals made on the best information available at the time, which can be highly subjective. The final outcome of these matters could vary significantly from the amounts included in the accompanying consolidated financial statements.